TRACE · ROUND 2

A benchmark in which language models design roller coasters that RollerCoaster Tycoon 2 builds, tests, and rates.

openrouter_qwen_qwen3.8-2.4t-a95b · 20260813-qwen38-design · round 2 back to model →
events
244
tool calls
94
rejected
1
session
20:45
cost
$4.51
Session trace
  1. 0:42
    piece_geometry20 ms
    {"dir":2}
    {"deltas":[{"bank_out":0,"dir_out":2,"dx_tiles":1,"dy_tiles":0,"dz":0,"piece":"flat","slope_out":0},{"bank_out":0,"dir_out":2,"dx_tiles":1,"dy_tiles":0,"dz":0,"piece":"end_station","slope_out":0},{"bank_out":0,"dir_out":2,"dx_tiles":1,"dy_tiles":0,"dz":0,"piece":"begin_station","slope_out":0},{"bank_out":0,"dir_out":2,"dx_tiles":1,"dy_tiles":0,"dz":0,"piece":"middle_station","slope_out":0},{"bank_out":0,"dir_out":2,"dx_tiles":1,"dy_tiles":0,"dz":16,"piece":"up_25","slope_out":2},{"bank_out":0,"dir_out":2,"dx_tiles":1,"dy_tiles":0,"dz":64,"piece":"up_60","slope_out":4},{"bank_out":0,"dir_out":2,"dx_tiles":1,"dy_tiles":0,"dz":8,"piece":"flat_to_up_25","slope_out":2},{"bank_out":0,"dir_out":2,"dx_tiles":1,"dy_tiles":0,"dz":32,"piece":"up_25_to_up_60","slope_out":4},{"bank_out":0,"dir_out":2,"dx_tiles":1,"dy_tiles":0,"dz":32,"piece":"up_60_to_up_25","slope_out":2},{"bank_out":0,"dir_out":2,"dx_tiles":1,"dy_tiles":0,"dz":8,"piece":"up_25_to_flat","slope_out":0},{"bank_out":0,"dir_out":2,"dx_tiles":1,"dy_tiles":0,"dz":-16,"piece":"down_25","slope_out":6},{"bank_out":0,"dir_out":2,"dx_tiles":1,"dy_tiles":0,"dz":-64,"piece":"down_60","slope_out":8},{"bank_out":0,"dir_out":2,"dx_tiles":1,"d… (7346 chars)
  2. 0:42
    best_result22 msrejected
  3. 0:42
    $0.0531
  4. 0:59
    piece_geometry28 ms
    {"dir":0}
    {"deltas":[{"bank_out":0,"dir_out":0,"dx_tiles":-1,"dy_tiles":0,"dz":0,"piece":"flat","slope_out":0},{"bank_out":0,"dir_out":0,"dx_tiles":-1,"dy_tiles":0,"dz":0,"piece":"end_station","slope_out":0},{"bank_out":0,"dir_out":0,"dx_tiles":-1,"dy_tiles":0,"dz":0,"piece":"begin_station","slope_out":0},{"bank_out":0,"dir_out":0,"dx_tiles":-1,"dy_tiles":0,"dz":0,"piece":"middle_station","slope_out":0},{"bank_out":0,"dir_out":0,"dx_tiles":-1,"dy_tiles":0,"dz":16,"piece":"up_25","slope_out":2},{"bank_out":0,"dir_out":0,"dx_tiles":-1,"dy_tiles":0,"dz":64,"piece":"up_60","slope_out":4},{"bank_out":0,"dir_out":0,"dx_tiles":-1,"dy_tiles":0,"dz":8,"piece":"flat_to_up_25","slope_out":2},{"bank_out":0,"dir_out":0,"dx_tiles":-1,"dy_tiles":0,"dz":32,"piece":"up_25_to_up_60","slope_out":4},{"bank_out":0,"dir_out":0,"dx_tiles":-1,"dy_tiles":0,"dz":32,"piece":"up_60_to_up_25","slope_out":2},{"bank_out":0,"dir_out":0,"dx_tiles":-1,"dy_tiles":0,"dz":8,"piece":"up_25_to_flat","slope_out":0},{"bank_out":0,"dir_out":0,"dx_tiles":-1,"dy_tiles":0,"dz":-16,"piece":"down_25","slope_out":6},{"bank_out":0,"dir_out":0,"dx_tiles":-1,"dy_tiles":0,"dz":-64,"piece":"down_60","slope_out":8},{"bank_out":0,"dir_out":0,"dx… (7397 chars)
  5. 0:59
    piece_geometry134 ms
    {"dir":3}
    {"deltas":[{"bank_out":0,"dir_out":3,"dx_tiles":0,"dy_tiles":-1,"dz":0,"piece":"flat","slope_out":0},{"bank_out":0,"dir_out":3,"dx_tiles":0,"dy_tiles":-1,"dz":0,"piece":"end_station","slope_out":0},{"bank_out":0,"dir_out":3,"dx_tiles":0,"dy_tiles":-1,"dz":0,"piece":"begin_station","slope_out":0},{"bank_out":0,"dir_out":3,"dx_tiles":0,"dy_tiles":-1,"dz":0,"piece":"middle_station","slope_out":0},{"bank_out":0,"dir_out":3,"dx_tiles":0,"dy_tiles":-1,"dz":16,"piece":"up_25","slope_out":2},{"bank_out":0,"dir_out":3,"dx_tiles":0,"dy_tiles":-1,"dz":64,"piece":"up_60","slope_out":4},{"bank_out":0,"dir_out":3,"dx_tiles":0,"dy_tiles":-1,"dz":8,"piece":"flat_to_up_25","slope_out":2},{"bank_out":0,"dir_out":3,"dx_tiles":0,"dy_tiles":-1,"dz":32,"piece":"up_25_to_up_60","slope_out":4},{"bank_out":0,"dir_out":3,"dx_tiles":0,"dy_tiles":-1,"dz":32,"piece":"up_60_to_up_25","slope_out":2},{"bank_out":0,"dir_out":3,"dx_tiles":0,"dy_tiles":-1,"dz":8,"piece":"up_25_to_flat","slope_out":0},{"bank_out":0,"dir_out":3,"dx_tiles":0,"dy_tiles":-1,"dz":-16,"piece":"down_25","slope_out":6},{"bank_out":0,"dir_out":3,"dx_tiles":0,"dy_tiles":-1,"dz":-64,"piece":"down_60","slope_out":8},{"bank_out":0,"dir_out":3,"dx… (7397 chars)
  6. 0:59
    piece_geometry284 ms
    {"dir":1}
    {"deltas":[{"bank_out":0,"dir_out":1,"dx_tiles":0,"dy_tiles":1,"dz":0,"piece":"flat","slope_out":0},{"bank_out":0,"dir_out":1,"dx_tiles":0,"dy_tiles":1,"dz":0,"piece":"end_station","slope_out":0},{"bank_out":0,"dir_out":1,"dx_tiles":0,"dy_tiles":1,"dz":0,"piece":"begin_station","slope_out":0},{"bank_out":0,"dir_out":1,"dx_tiles":0,"dy_tiles":1,"dz":0,"piece":"middle_station","slope_out":0},{"bank_out":0,"dir_out":1,"dx_tiles":0,"dy_tiles":1,"dz":16,"piece":"up_25","slope_out":2},{"bank_out":0,"dir_out":1,"dx_tiles":0,"dy_tiles":1,"dz":64,"piece":"up_60","slope_out":4},{"bank_out":0,"dir_out":1,"dx_tiles":0,"dy_tiles":1,"dz":8,"piece":"flat_to_up_25","slope_out":2},{"bank_out":0,"dir_out":1,"dx_tiles":0,"dy_tiles":1,"dz":32,"piece":"up_25_to_up_60","slope_out":4},{"bank_out":0,"dir_out":1,"dx_tiles":0,"dy_tiles":1,"dz":32,"piece":"up_60_to_up_25","slope_out":2},{"bank_out":0,"dir_out":1,"dx_tiles":0,"dy_tiles":1,"dz":8,"piece":"up_25_to_flat","slope_out":0},{"bank_out":0,"dir_out":1,"dx_tiles":0,"dy_tiles":1,"dz":-16,"piece":"down_25","slope_out":6},{"bank_out":0,"dir_out":1,"dx_tiles":0,"dy_tiles":1,"dz":-64,"piece":"down_60","slope_out":8},{"bank_out":0,"dir_out":1,"dx_tiles":0,"d… (7346 chars)
  7. 0:59
    todowrite3 ms
    {"todos":[{"content":"Plan a closed-circuit layout on paper using piece geometry","priority":"high","status":"in_progress"},{"content":"new_ride + build the circuit in chunks","priority":"high","status":"pending"},{"content":"Verify circuit_closed via get_state, fix any rejections","priority":"high","status":"pending"},{"content":"finish_and_test to bank a score EARLY","priority":"high","status":"pending"},{"content":"Iterate: rebuild to beat the banked score if time allows","priority":"medium","status":"pending"},{"content":"Confirm banked score via best_result","priority":"medium","status":"pending"}]}
    [
  {
    "content": "Plan a closed-circuit layout on paper using piece geometry",
    "status": "in_progress",
    "priority": "high"
  },
  {
    "content": "new_ride + build the circuit in chunks",
    "status": "pending",
    "priority": "high"
  },
  {
    "content": "Verify circuit_closed via get_state, fix any rejections",
    "status": "pending",
    "priority": "high"
  },
  {
    "content": "finish_and_test to bank a score EARLY",
    "status": "pending",
    "priority": "high"
  },
  {
    "content": "Iterate: rebuild to beat the banked score if time allows",
    "status": "pending",
    "priority": "medium"
  },
  {
    "content": "Confirm banked score via best_result",
    "status": "pending",
    "priority": "medium"
  }
]
  8. 0:59

    I have the dir=2 geometry. Let me get geometry for the other directions so I can plan a precise closed circuit, and set up my task list.

  9. 0:59
    $0.0233
  10. 2:43

    I have all four direction geometries. Let me plan and start building. My design: tall chain lift, big drop, corkscrew inversions, a helix, camelback airtime hills, banked corners, and a long return with a brake run. Starting at (40,92) facing +x, safely away from the lake. Let me build the first chunk: station, booster, lift hill, top banked turn, and the big drop.

  11. 2:43
    new_ride20 ms
    {"dir":2,"ride_type":51,"x":40,"y":92}
    {"cursor":{"bank":0,"dir":2,"slope":0,"x":40,"y":92,"z":112},"ride_id":0}
  12. 2:43
    $0.1229
  13. 2:45
    place_pieces21 ms
    {"pieces":["begin_station","middle_station","middle_station","end_station",{"speed":26,"t":"booster"},{"chain":true,"t":"flat_to_up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25_to_flat"},"flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat","flat_to_down_25","down_25","down_25","down_25","down_25","down_25","down_25","down_25","down_25","down_25_to_flat"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":3,"slope":0,"x":58,"y":78,"z":96},"placed_this_call":28,"total_placed":28}
  14. 2:45
    $0.0131
  15. 3:00

    28 of 29 placed and the cursor is at z=96 (underground) — one piece was rejected mid-sequence, shifting my height math. Let me inspect the exact state.

  16. 3:00
    get_state14 ms
    {"circuit_closed":false,"cursor":{"bank":0,"dir":3,"slope":0,"x":58,"y":78,"z":96},"finalized":false,"pieces_placed":28,"placed_pieces":["begin_station","middle_station","middle_station","end_station",{"speed":26,"t":"booster"},{"chain":true,"t":"flat_to_up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25_to_flat"},"flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat","flat_to_down_25","down_25","down_25","down_25","down_25","down_25","down_25","down_25","down_25","down_25_to_flat"],"ride_id":0,"start":{"bank":0,"dir":2,"slope":0,"x":40,"y":92,"z":112},"total_cost":27329}
  17. 3:00
    $0.0257
  18. 3:09

    I over-descended: my lift gained +128 (top z=240) but my drop shed -144, landing at z=96 (underground). I sent 7 `up_25` but 8 `down_25`. Let me undo the extra down pieces and re-level to z=112.

  19. 3:09
    undo_piece14 ms
    {"cursor":{"bank":0,"dir":3,"slope":6,"x":58,"y":79,"z":104},"pieces_placed":27,"removed":"down_25_to_flat"}
  20. 3:09
    $0.0225
  21. 3:11
    undo_piece13 ms
    {"cursor":{"bank":0,"dir":3,"slope":6,"x":58,"y":80,"z":120},"pieces_placed":26,"removed":"down_25"}
  22. 3:11
    $0.0156
  23. 3:12
    place_piece11 ms
    {"piece":"down_25_to_flat"}
    {"circuit_closed":false,"cost":800,"cursor":{"bank":0,"dir":3,"slope":0,"x":58,"y":79,"z":112},"pieces_placed":27,"placed":"down_25_to_flat"}
  24. 3:12
    $0.0129
  25. 4:24

    Good, now at ground (58,79,112) facing dir3. The batch placed all 28 (I sent 7 `up_25`, not 8). Now I'll build the north run with a corkscrew inversion, then a banked turn west. Let me place this chunk and verify.

  26. 4:24
    place_pieces18 ms
    {"pieces":["flat","left_corkscrew_up","right_corkscrew_down","flat","flat","flat","flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":0,"slope":0,"x":57,"y":68,"z":112},"placed_this_call":10,"total_placed":37}
  27. 4:24
    $0.0924
  28. 4:33

    Now at (57,68,112) facing west (dir0), 37 pieces. Let me confirm the exact built sequence before continuing the west leg.

  29. 4:33
    get_state12 ms
    {"circuit_closed":false,"cursor":{"bank":0,"dir":0,"slope":0,"x":57,"y":68,"z":112},"finalized":false,"pieces_placed":37,"placed_pieces":["begin_station","middle_station","middle_station","end_station",{"speed":26,"t":"booster"},{"chain":true,"t":"flat_to_up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25_to_flat"},"flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat","flat_to_down_25","down_25","down_25","down_25","down_25","down_25","down_25","down_25","down_25_to_flat","flat","left_corkscrew_up","right_corkscrew_down","flat","flat","flat","flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat"],"ride_id":0,"start":{"bank":0,"dir":2,"slope":0,"x":40,"y":92,"z":112},"total_cost":40200}
  30. 4:33
    $0.0222
  31. 5:04

    State confirmed: 37 pieces, cursor at (57,68,112) facing west (dir0). Now I'll build the west leg: 2 more corkscrew inversions, camelback airtime hills, an s-bend, heading west. Placing 19 pieces.

  32. 5:04
    place_pieces16 ms
    {"pieces":["flat","flat","left_corkscrew_up","right_corkscrew_down","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","flat","flat","s_bend_right","left_corkscrew_up","right_corkscrew_down","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","flat","flat"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":0,"slope":0,"x":34,"y":63,"z":112},"placed_this_call":19,"total_placed":56}
  33. 5:04
    $0.0521
  34. 5:13

    West leg landed exactly at (34,63) as planned. Now corner C (west→south turn), placing just the corner first to verify the exact exit position.

  35. 5:13
    place_pieces17 ms
    {"pieces":["flat_to_right_bank","banked_right_turn_5","right_bank_to_flat"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":1,"slope":0,"x":31,"y":67,"z":112},"placed_this_call":3,"total_placed":59}
  36. 5:13
    $0.0363
  37. 5:15

    Corner C landed exactly at (31,67) facing south. Now the south leg: flats, two camelback hills, and s-bends for length, ending at y=89.

  38. 5:15
    place_pieces14 ms
    {"pieces":["flat","flat","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","s_bend_right","s_bend_left","flat","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","flat","flat","flat","flat","flat"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":1,"slope":0,"x":31,"y":89,"z":112},"placed_this_call":18,"total_placed":77}
  39. 5:15
    $0.0205
  40. 5:18

    South leg landed exactly at (31,89). Now corner D (south→east turn), placing just the corner to verify exit position before the final return.

  41. 5:18
    place_pieces11 ms
    {"pieces":["flat_to_right_bank","banked_right_turn_5","right_bank_to_flat"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":2,"slope":0,"x":35,"y":92,"z":112},"placed_this_call":3,"total_placed":80}
  42. 5:18
    $0.0198
  43. 5:24

    Corner D at (35,92) facing east, exactly on plan. Final return leg to the station with brakes — 5 tiles to (40,92).

  44. 5:24
    place_pieces9 ms
    {"pieces":["flat",{"speed":10,"t":"brakes"},{"speed":10,"t":"brakes"},"flat","flat"]}
    {"circuit_closed":true,"cursor":{"bank":0,"dir":2,"slope":0,"x":40,"y":92,"z":112},"placed_this_call":5,"total_placed":85}
  45. 5:24
    $0.0195
  46. 5:25

    Circuit closed with 85 pieces. Testing now to bank a score early.

  47. 5:26
    finish_and_test647 ms
    {"bounds":{"max_tile_x":61,"max_tile_y":92,"max_z":264,"min_tile_x":31,"min_tile_y":63,"min_z":112},"placed_pieces":["begin_station","middle_station","middle_station","end_station",{"speed":26,"t":"booster"},{"chain":true,"t":"flat_to_up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25_to_flat"},"flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat","flat_to_down_25","down_25","down_25","down_25","down_25","down_25","down_25","down_25","down_25_to_flat","flat","left_corkscrew_up","right_corkscrew_down","flat","flat","flat","flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat","flat","flat","left_corkscrew_up","right_corkscrew_down","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","flat","flat","s_bend_right","left_corkscrew_up","right_corkscrew_down","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","flat","flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat","flat","flat","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_2… (2280 chars)
  48. 5:26
    $0.0190
  49. 7:24

    Banked a score: **6.41** (excitement 6.41, intensity 6.40, 3 inversions, 522 length, similarity 0.36). That's my safety net. Now I have headroom — intensity is only 6.4, so I can push harder. Let me rebuild a more exciting v2: taller lift, a steep 60° first drop, 4 corkscrew inversions, and 5 airtime hills. Demolishing and rebuilding.

  50. 7:24
    demolish9 ms
    {"demolished":0}
  51. 7:24
    $0.1697
  52. 7:27
    new_ride7 ms
    {"dir":2,"ride_type":51,"x":40,"y":92}
    {"cursor":{"bank":0,"dir":2,"slope":0,"x":40,"y":92,"z":112},"ride_id":0}
  53. 7:27
    $0.0688
  54. 7:30

    Now building v2. Chunk 1: station, booster, tall chain lift (8×up_25 → z=256), corner A, and steep 60° drop.

  55. 7:30
    place_pieces7 ms
    {"pieces":["begin_station","middle_station","middle_station","end_station",{"speed":28,"t":"booster"},{"chain":true,"t":"flat_to_up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25_to_flat"},"flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat","flat_to_down_25","down_25_to_down_60","down_60","down_60_to_down_25","down_25_to_flat"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":3,"slope":0,"x":58,"y":83,"z":96},"placed_this_call":23,"total_placed":23}
  56. 7:30
    $0.0269
  57. 7:42
    undo_piece15 ms
    {"cursor":{"bank":0,"dir":3,"slope":6,"x":58,"y":84,"z":104},"pieces_placed":22,"removed":"down_25_to_flat"}
  58. 7:42
    undo_piece22 ms
    {"cursor":{"bank":0,"dir":3,"slope":8,"x":58,"y":85,"z":136},"pieces_placed":21,"removed":"down_60_to_down_25"}
  59. 7:42

    The drop ended at z=96 — 16 below ground (112). The geometry deltas for slope transitions don't match actual behavior. Let me undo the 5 drop pieces one at a time to learn the true dz of each.

  60. 7:42
    undo_piece113 ms
    {"cursor":{"bank":0,"dir":3,"slope":8,"x":58,"y":86,"z":200},"pieces_placed":20,"removed":"down_60"}
  61. 7:42
    undo_piece124 ms
    {"cursor":{"bank":0,"dir":3,"slope":6,"x":58,"y":87,"z":232},"pieces_placed":19,"removed":"down_25_to_down_60"}
  62. 7:42
    undo_piece126 ms
    {"cursor":{"bank":0,"dir":3,"slope":0,"x":58,"y":88,"z":240},"pieces_placed":18,"removed":"flat_to_down_25"}
  63. 7:42
    $0.0363
  64. 7:53

    I've identified the actual dz values: drop pieces match the geometry, but the lift transitions net to 0, so the 8×up_25 lift only gains +128 (top z=240). Now at (58,88) z=240, I'll place a 60° drop totaling −128 to reach ground.

  65. 7:53
    place_piece8 ms
    {"piece":"flat_to_down_60"}
    {"circuit_closed":false,"cost":1175,"cursor":{"bank":0,"dir":3,"slope":8,"x":58,"y":87,"z":216},"pieces_placed":19,"placed":"flat_to_down_60"}
  66. 7:53
    $0.0398
  67. 7:55
    place_pieces7 ms
    {"pieces":["down_60","down_60_to_down_25","down_25_to_flat"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":3,"slope":0,"x":58,"y":84,"z":112},"placed_this_call":3,"total_placed":22}
  68. 7:55
    $0.0273
  69. 8:38

    Current state check — I need to confirm exactly what's placed (the lift may have rejected an `up_25` at the height cap), then continue the north run.

  70. 8:38
    get_state12 ms
    {"circuit_closed":false,"cursor":{"bank":0,"dir":3,"slope":0,"x":58,"y":84,"z":112},"finalized":false,"pieces_placed":22,"placed_pieces":["begin_station","middle_station","middle_station","end_station",{"speed":28,"t":"booster"},{"chain":true,"t":"flat_to_up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25_to_flat"},"flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat","flat_to_down_60","down_60","down_60_to_down_25","down_25_to_flat"],"ride_id":0,"start":{"bank":0,"dir":2,"slope":0,"x":40,"y":92,"z":112},"total_cost":22387}
  71. 8:38
    $0.0664
  72. 8:58

    Now at (58,84) dir3 on the ground after the steep 60° drop. Let me build the north run: an airtime camelback, a corkscrew inversion, then a banked turn to head west.

  73. 8:58
    place_pieces18 ms
    {"pieces":["flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","left_corkscrew_up","right_corkscrew_down","flat","flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":0,"slope":0,"x":57,"y":72,"z":112},"placed_this_call":11,"total_placed":33}
  74. 8:58
    $0.0548
  75. 9:04

    I've placed 33 pieces and positioned the cursor at coordinates (57,72) facing west. Now I'll build the west leg with corkscrews, a camelback, s-bends, and corner C to turn south.

  76. 9:04
    place_pieces15 ms
    {"pieces":["flat","flat","left_corkscrew_up","right_corkscrew_down","flat","flat","left_corkscrew_up","right_corkscrew_down","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","s_bend_right","s_bend_left","flat","flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":1,"slope":0,"x":32,"y":70,"z":112},"placed_this_call":19,"total_placed":52}
  77. 9:04
    $0.0350
  78. 9:10

    West leg landed exactly at (32,70) facing south. Now the south leg: three left s-bends (shifting west to x=29), a camelback hill, flats, then corner D to turn east toward the station.

  79. 9:10
    place_pieces13 ms
    {"pieces":["s_bend_left","s_bend_left","s_bend_left","flat","flat","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","flat","flat","flat","flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":2,"slope":0,"x":33,"y":92,"z":112},"placed_this_call":16,"total_placed":68}
  80. 9:10
    $0.0349
  81. 9:15

    South leg landed exactly at (33,92) facing east — right on the station's row. Final return leg: 7 tiles to (40,92) with brakes before the station.

  82. 9:15
    place_pieces17 ms
    {"pieces":["flat","flat",{"speed":12,"t":"brakes"},{"speed":12,"t":"brakes"},{"speed":8,"t":"brakes"},"flat","flat"]}
    {"circuit_closed":true,"cursor":{"bank":0,"dir":2,"slope":0,"x":40,"y":92,"z":112},"placed_this_call":7,"total_placed":75}
  83. 9:15
    $0.0340
  84. 9:42

    Circuit closed with 75 pieces — cursor back at start (40,92,112). The layout has a steep 60° first drop, 3 corkscrew inversions, camelback airtime hills, s-bends, and 4 banked corners. Let me test it. One concern: no mid-course booster before the corkscrews, so I'll watch for a valley.

  85. 9:42
    finish_and_test134 ms
    {"bounds":{"max_tile_x":61,"max_tile_y":92,"max_z":264,"min_tile_x":29,"min_tile_y":66,"min_z":112},"placed_pieces":["begin_station","middle_station","middle_station","end_station",{"speed":28,"t":"booster"},{"chain":true,"t":"flat_to_up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25_to_flat"},"flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat","flat_to_down_60","down_60","down_60_to_down_25","down_25_to_flat","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","left_corkscrew_up","right_corkscrew_down","flat","flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat","flat","flat","left_corkscrew_up","right_corkscrew_down","flat","flat","left_corkscrew_up","right_corkscrew_down","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","s_bend_right","s_bend_left","flat","flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat","s_bend_left","s_bend_left","s_bend_left","flat","flat","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to… (2208 chars)
  86. 9:42
    $0.0537
  87. 11:40

    I've secured 6.41 points and identified key performance metrics: the longer gentle drop outperformed the steep one, and I have room to increase intensity and improve airtime and top speed. Now I'll replay the better layout with strategic booster placements to optimize performance.

  88. 11:40
    demolish19 ms
    {"demolished":0}
  89. 11:40
    $0.1510
  90. 11:42
    new_ride12 ms
    {"dir":2,"ride_type":51,"x":40,"y":92}
    {"cursor":{"bank":0,"dir":2,"slope":0,"x":40,"y":92,"z":112},"ride_id":0}
  91. 11:42
    $0.0366
  92. 11:46

    I've confirmed the v2 design scored 6.33, below the banked 6.41, and identified that the lift caps at 7 ups while gentle drops outperform steep ones. Now I'll test v3 with a mid-course booster and two camelbacks to improve airtime and speed while maintaining the closure.

  93. 11:46
    place_pieces11 ms
    {"pieces":["begin_station","middle_station","middle_station","end_station",{"speed":26,"t":"booster"},{"chain":true,"t":"flat_to_up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25_to_flat"},"flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat","flat_to_down_25","down_25","down_25","down_25","down_25","down_25","down_25","down_25","down_25_to_flat"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":3,"slope":0,"x":57,"y":79,"z":96},"placed_this_call":26,"total_placed":26}
  94. 11:46
    $0.0379
  95. 11:58

    26/27 placed, cursor z=96 again — one piece dropped silently. Checking exact state.

  96. 11:58
    get_state18 ms
    {"circuit_closed":false,"cursor":{"bank":0,"dir":3,"slope":0,"x":57,"y":79,"z":96},"finalized":false,"pieces_placed":26,"placed_pieces":["begin_station","middle_station","middle_station","end_station",{"speed":26,"t":"booster"},{"chain":true,"t":"flat_to_up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25_to_flat"},"flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat","flat_to_down_25","down_25","down_25","down_25","down_25","down_25","down_25","down_25","down_25_to_flat"],"ride_id":0,"start":{"bank":0,"dir":2,"slope":0,"x":40,"y":92,"z":112},"total_cost":25017}
  97. 11:58
    $0.0468
  98. 12:40

    I found that the lift silently dropped a section, leaving the track 16 units underground. I'll fix this by undoing the last two drops and re-leveling, then continue with v3 while accounting for the geometry shift.

  99. 12:40
    undo_piece16 ms
    {"cursor":{"bank":0,"dir":3,"slope":6,"x":57,"y":80,"z":104},"pieces_placed":25,"removed":"down_25_to_flat"}
  100. 12:40
    $0.0821
  101. 13:02

    Lift gained +112 but drop shed −128 (one extra `down_25`), landing 16 underground. I've undone `down_25_to_flat`; now undo one `down_25` and re-level.

  102. 13:02
    undo_piece11 ms
    {"cursor":{"bank":0,"dir":3,"slope":6,"x":57,"y":81,"z":120},"pieces_placed":24,"removed":"down_25"}
  103. 13:02
    $0.0610
  104. 13:09

    One `up_25` was silently dropped (lift topped at z=224, not 240), so my 7-down drop overshot. I've removed the extra down piece. Now re-level to ground.

  105. 13:09
    place_piece14 ms
    {"piece":"down_25_to_flat"}
    {"circuit_closed":false,"cost":825,"cursor":{"bank":0,"dir":3,"slope":0,"x":57,"y":80,"z":112},"pieces_placed":25,"placed":"down_25_to_flat"}
  106. 13:09
    $0.0444
  107. 13:38

    I've confirmed the ground position and identified that the v3 layout is shifted slightly from build A, so I'll verify each segment empirically. Now I'm building batch 2 with the booster, corkscrew, camelback, and corner elements.

  108. 13:38
    place_pieces15 ms
    {"pieces":[{"speed":30,"t":"booster"},"left_corkscrew_up","right_corkscrew_down","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat","flat","flat","left_corkscrew_up","right_corkscrew_down","flat","flat","left_corkscrew_up","right_corkscrew_down","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","s_bend_right","s_bend_left","flat","flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":1,"slope":0,"x":31,"y":67,"z":112},"placed_this_call":29,"total_placed":54}
  109. 13:38
    $0.0651
  110. 13:58

    I've placed 54 pieces with the cursor at the corner C exit, noting a slight offset from the previous build that I'll account for in the return leg. Now I'll work on the south leg with s-bends, a booster, and double camelbacks leading into corner D.

  111. 13:58
    place_pieces13 ms
    {"pieces":["s_bend_left","s_bend_left","s_bend_left",{"speed":27,"t":"booster"},"flat","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":2,"slope":0,"x":32,"y":89,"z":112},"placed_this_call":16,"total_placed":70}
  112. 13:58
    $0.0593
  113. 14:01

    South leg + corner D landed exactly at (32,89) facing east. Final return: brakes, left_turn_5 up to y=92, right_turn_1 to face east, 3 flats to station.

  114. 14:01
    place_pieces12 ms
    {"pieces":[{"speed":12,"t":"brakes"},{"speed":8,"t":"brakes"},"left_turn_5","right_turn_1","flat","flat","flat"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":1,"slope":0,"x":36,"y":92,"z":112},"placed_this_call":3,"rejection":{"error":"ride type 51 has no artwork for this piece: it would build and rate but render as nothing (invisible track). valid_next_pieces lists what this ride can draw here","index":3,"piece":"right_turn_1"},"total_placed":73}
  115. 14:01
    $0.0432
  116. 14:08

    I found that `right_turn_1` lacks artwork for ride 51, so I'm undoing the `left_turn_5` and will instead use a pair of 3-tile turns to reach the target position.

  117. 14:08
    undo_piece9 ms
    {"cursor":{"bank":0,"dir":2,"slope":0,"x":34,"y":89,"z":112},"pieces_placed":72,"removed":"left_turn_5"}
  118. 14:08
    $0.0475
  119. 14:10
    place_pieces9 ms
    {"pieces":["left_turn_3","right_turn_3","flat","flat","flat"]}
    {"circuit_closed":true,"cursor":{"bank":0,"dir":2,"slope":0,"x":40,"y":92,"z":112},"placed_this_call":5,"total_placed":77}
  120. 14:10
    $0.0427
  121. 14:13

    Circuit closed — 77 pieces, cursor back at start. Testing v3 now.

  122. 14:13
    finish_and_test717 ms
    {"bounds":{"max_tile_x":60,"max_tile_y":92,"max_z":248,"min_tile_x":28,"min_tile_y":63,"min_z":112},"placed_pieces":["begin_station","middle_station","middle_station","end_station",{"speed":26,"t":"booster"},{"chain":true,"t":"flat_to_up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25_to_flat"},"flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat","flat_to_down_25","down_25","down_25","down_25","down_25","down_25","down_25","down_25_to_flat",{"speed":30,"t":"booster"},"left_corkscrew_up","right_corkscrew_down","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat","flat","flat","left_corkscrew_up","right_corkscrew_down","flat","flat","left_corkscrew_up","right_corkscrew_down","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","s_bend_right","s_bend_left","flat","flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat","s_bend_left","s_bend_left","s_bend_left",{"speed":27,"t":"booster"},"flat","flat_to_up_25","up_25_to_… (2289 chars)
  123. 14:13
    $0.0427
  124. 14:45

    v3 banked **6.49** — new best (up from 6.41). Intensity only 6.88, so I have headroom to ~9.5. Key gains came from the mid-course booster (max speed 1.27M vs 1.08M) and better airtime (−0.87g). Let me push further with v4: full-height lift, a 4th inversion, and a descending helix for lateral G + length. Demolishing and rebuilding.

  125. 14:45
    demolish20 ms
    {"demolished":0}
  126. 14:45
    $0.0735
  127. 15:00
    new_ride10 ms
    {"dir":2,"ride_type":51,"x":40,"y":92}
    {"cursor":{"bank":0,"dir":2,"slope":0,"x":40,"y":92,"z":112},"ride_id":0}
  128. 15:00
    $0.0558
  129. 15:03
    place_pieces8 ms
    {"pieces":["begin_station","middle_station","middle_station","end_station",{"speed":28,"t":"booster"},{"chain":true,"t":"flat_to_up_25"}]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":2,"slope":2,"x":46,"y":92,"z":120},"placed_this_call":6,"total_placed":6}
  130. 15:03
    $0.0451
  131. 15:06
    place_pieces11 ms
    {"pieces":[{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25_to_flat"},"flat"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":2,"slope":0,"x":55,"y":92,"z":240},"placed_this_call":9,"total_placed":15}
  132. 15:06
    $0.0454
  133. 15:10

    Lift topped at z=240 — full height. Now corner A, gentle drop, booster(30), airtime hill, corkscrew #1, corner B.

  134. 15:10
    place_pieces15 ms
    {"pieces":["flat_to_right_bank","banked_right_turn_5","right_bank_to_flat","flat_to_down_25","down_25","down_25","down_25","down_25","down_25","down_25","down_25","down_25_to_flat",{"speed":30,"t":"booster"},"flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","left_corkscrew_up","right_corkscrew_down","flat","flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":0,"slope":0,"x":57,"y":66,"z":112},"placed_this_call":24,"total_placed":39}
  135. 15:10
    $0.0483
  136. 15:20

    At (57,66) facing west. Now the west leg: 3 corkscrew inversions (#2,#3,#4), camelback, s-bends, then corner C turning south.

  137. 15:20
    place_pieces17 ms
    {"pieces":["flat","flat","left_corkscrew_up","right_corkscrew_down","flat","flat","left_corkscrew_up","right_corkscrew_down","flat","flat","left_corkscrew_up","right_corkscrew_down","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","s_bend_right","s_bend_left","flat","flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":1,"slope":0,"x":27,"y":61,"z":112},"placed_this_call":23,"total_placed":62}
  138. 15:20
    $0.0542
  139. 15:25

    West leg landed exactly at (27,61) facing south. Now south leg: hills, s-bends, booster, corner D.

  140. 15:25
    place_pieces8 ms
    {"pieces":["flat","flat","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","s_bend_right","s_bend_left","flat","flat","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat",{"speed":27,"t":"booster"},"flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","flat","flat","flat","flat","flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":2,"slope":0,"x":31,"y":92,"z":112},"placed_this_call":27,"total_placed":89}
  141. 15:25
    $0.0477
  142. 15:27

    South leg + corner D landed exactly at (31,92) facing east. Final return: 9 tiles with brakes to close at (40,92).

  143. 15:27
    place_pieces8 ms
    {"pieces":["flat","flat",{"speed":12,"t":"brakes"},{"speed":12,"t":"brakes"},{"speed":8,"t":"brakes"},"flat","flat","flat","flat"]}
    {"circuit_closed":true,"cursor":{"bank":0,"dir":2,"slope":0,"x":40,"y":92,"z":112},"placed_this_call":9,"total_placed":98}
  144. 15:27
    $0.0461
  145. 15:29

    Circuit closed — 98 pieces, 4 inversions, full-height lift. Testing v4.

  146. 15:30
    finish_and_test698 ms
    {"bounds":{"max_tile_x":61,"max_tile_y":92,"max_z":264,"min_tile_x":27,"min_tile_y":57,"min_z":112},"placed_pieces":["begin_station","middle_station","middle_station","end_station",{"speed":28,"t":"booster"},{"chain":true,"t":"flat_to_up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25_to_flat"},"flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat","flat_to_down_25","down_25","down_25","down_25","down_25","down_25","down_25","down_25","down_25_to_flat",{"speed":30,"t":"booster"},"flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","left_corkscrew_up","right_corkscrew_down","flat","flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat","flat","flat","left_corkscrew_up","right_corkscrew_down","flat","flat","left_corkscrew_up","right_corkscrew_down","flat","flat","left_corkscrew_up","right_corkscrew_down","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","s_bend_right","s_bend_left","flat","flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_… (2519 chars)
  147. 15:30
    $0.0453
  148. 15:52

    v4 banked **6.80** — new best (up from 6.49). Intensity 7.54, still headroom to ~9.5. Gains came from full-height lift (drop 16), 4 inversions, length 610, more airtime. Let me push a v5: bigger footprint (expand north), 5-6 inversions, more length/airtime. Demolishing.

  149. 15:52
    demolish18 ms
    {"demolished":0}
  150. 15:52
    $0.0647
  151. 16:13

    v4 = **6.80** banked. Now v5: expand west leg to 4 corkscrews (5 inversions total), more airtime hills, longer south leg. Building opening chunk (station → corner B).

  152. 16:13
    new_ride12 ms
    {"dir":2,"ride_type":51,"x":40,"y":92}
    {"cursor":{"bank":0,"dir":2,"slope":0,"x":40,"y":92,"z":112},"ride_id":0}
  153. 16:13
    $0.0711
  154. 16:17
    place_pieces20 ms
    {"pieces":["begin_station","middle_station","middle_station","end_station",{"speed":28,"t":"booster"},{"chain":true,"t":"flat_to_up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25_to_flat"},"flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat","flat_to_down_25","down_25","down_25","down_25","down_25","down_25","down_25","down_25","down_25_to_flat",{"speed":30,"t":"booster"},"flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","left_corkscrew_up","right_corkscrew_down","flat","flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat"]}
    {"circuit_closed":false,"cursor":{"bank":4,"dir":0,"slope":0,"x":57,"y":66,"z":96},"placed_this_call":37,"rejection":{"error":"Raise or lower land first","index":37,"piece":"right_bank_to_flat"},"total_placed":37}
  155. 16:17
    $0.0510
  156. 16:28

    Rejection: "Raise or lower land first" at `right_bank_to_flat`, cursor z=96. The batch silently dropped one `up_25` again (lift topped at 224 not 240), so the drop overshot to underground. In v4 I placed the lift in its own batch and it worked. Let me demolish and rebuild with the lift separated.

  157. 16:28
    demolish16 ms
    {"demolished":0}
  158. 16:28
    $0.0578
  159. 16:30
    new_ride11 ms
    {"dir":2,"ride_type":51,"x":40,"y":92}
    {"cursor":{"bank":0,"dir":2,"slope":0,"x":40,"y":92,"z":112},"ride_id":0}
  160. 16:30
    $0.0481
  161. 16:33

    Rebuilding v5. I'll place the lift in a separate batch to ensure all 7 `up_25` pieces register (the earlier large batch silently dropped one). Starting with station, booster, and lift base.

  162. 16:33
    place_pieces13 ms
    {"pieces":["begin_station","middle_station","middle_station","end_station",{"speed":28,"t":"booster"},{"chain":true,"t":"flat_to_up_25"}]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":2,"slope":2,"x":46,"y":92,"z":120},"placed_this_call":6,"total_placed":6}
  163. 16:33
    $0.0486
  164. 16:35
    place_pieces13 ms
    {"pieces":[{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25_to_flat"},"flat"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":2,"slope":0,"x":55,"y":92,"z":240},"placed_this_call":9,"total_placed":15}
  165. 16:35
    $0.0488
  166. 16:37

    Lift confirmed at z=240. Now corner A, the drop, booster, airtime hill, corkscrew #1, and corner B.

  167. 16:38
    place_pieces18 ms
    {"pieces":["flat_to_right_bank","banked_right_turn_5","right_bank_to_flat","flat_to_down_25","down_25","down_25","down_25","down_25","down_25","down_25","down_25","down_25_to_flat",{"speed":30,"t":"booster"},"flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","left_corkscrew_up","right_corkscrew_down","flat","flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":0,"slope":0,"x":57,"y":66,"z":112},"placed_this_call":24,"total_placed":39}
  168. 16:38
    $0.0492
  169. 16:42

    I've confirmed the opening matches v4 at 39 pieces. Now I'll extend the west leg with four corkscrews and two camelbacks, pushing north and west toward corner C.

  170. 16:42
    place_pieces13 ms
    {"pieces":["flat","flat","left_corkscrew_up","right_corkscrew_down","flat","flat","left_corkscrew_up","right_corkscrew_down","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","left_corkscrew_up","right_corkscrew_down","flat","flat","left_corkscrew_up","right_corkscrew_down","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":1,"slope":0,"x":28,"y":58,"z":112},"placed_this_call":25,"total_placed":64}
  171. 16:42
    $0.0520
  172. 16:57

    Corner D exited at (32,86) instead of the (32,92) I need for the station row — my south leg was 3 tiles short. Undoing corner D, adding flats, then re-placing.

  173. 16:57
    undo_piece20 ms
    {"cursor":{"bank":4,"dir":1,"slope":0,"x":28,"y":57,"z":112},"pieces_placed":63,"removed":"right_bank_to_flat"}
  174. 16:57
    undo_piece103 ms
    {"cursor":{"bank":4,"dir":0,"slope":0,"x":30,"y":54,"z":112},"pieces_placed":62,"removed":"banked_right_turn_5"}
  175. 16:57
    undo_piece123 ms
    {"cursor":{"bank":0,"dir":0,"slope":0,"x":31,"y":54,"z":112},"pieces_placed":61,"removed":"flat_to_right_bank"}
  176. 16:57
    $0.0616
  177. 17:13

    I've lost track of the exact state after those undos. Let me get ground truth.

  178. 17:13
    get_state21 ms
    {"circuit_closed":false,"cursor":{"bank":0,"dir":0,"slope":0,"x":31,"y":54,"z":112},"finalized":false,"pieces_placed":61,"placed_pieces":["begin_station","middle_station","middle_station","end_station",{"speed":28,"t":"booster"},{"chain":true,"t":"flat_to_up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25_to_flat"},"flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat","flat_to_down_25","down_25","down_25","down_25","down_25","down_25","down_25","down_25","down_25_to_flat",{"speed":30,"t":"booster"},"flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","left_corkscrew_up","right_corkscrew_down","flat","flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat","flat","flat","left_corkscrew_up","right_corkscrew_down","flat","flat","left_corkscrew_up","right_corkscrew_down","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","left_corkscrew_up","right_corkscrew_down","flat","flat","left_corkscrew_up","right_corkscrew_down","flat_to_up_25","up_25_to_flat","flat… (1322 chars)
  179. 17:13
    $0.0624
  180. 17:29

    State confirmed: 61 pieces, lift topped at z=240 (7 up_25s intact), 5 corkscrews placed, cursor at (31,54) facing west after the 3 undos removed corner C. Now re-placing corner C plus the south leg.

  181. 17:29
    place_pieces20 ms
    {"pieces":["flat_to_right_bank","banked_right_turn_5","right_bank_to_flat","flat","flat","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","s_bend_right","s_bend_left","flat","flat","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat",{"speed":27,"t":"booster"},"flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","s_bend_right","s_bend_left","flat","flat"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":1,"slope":0,"x":28,"y":89,"z":112},"placed_this_call":26,"total_placed":87}
  182. 17:29
    $0.0649
  183. 17:31

    South leg landed exactly at (28,89) facing south. Corner D + return leg with brakes to close at (40,92).

  184. 17:31
    place_pieces12 ms
    {"pieces":["flat_to_right_bank","banked_right_turn_5","right_bank_to_flat","flat","flat",{"speed":12,"t":"brakes"},{"speed":12,"t":"brakes"},{"speed":8,"t":"brakes"},"flat","flat","flat"]}
    {"circuit_closed":true,"cursor":{"bank":0,"dir":2,"slope":0,"x":40,"y":92,"z":112},"placed_this_call":11,"total_placed":98}
  185. 17:31
    $0.0519
  186. 17:33

    Circuit closed — 98 pieces, 5 inversions. Testing v5.

  187. 17:34
    finish_and_test708 ms
    {"bounds":{"max_tile_x":61,"max_tile_y":92,"max_z":264,"min_tile_x":28,"min_tile_y":54,"min_z":112},"placed_pieces":["begin_station","middle_station","middle_station","end_station",{"speed":28,"t":"booster"},{"chain":true,"t":"flat_to_up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25_to_flat"},"flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat","flat_to_down_25","down_25","down_25","down_25","down_25","down_25","down_25","down_25","down_25_to_flat",{"speed":30,"t":"booster"},"flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","left_corkscrew_up","right_corkscrew_down","flat","flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat","flat","flat","left_corkscrew_up","right_corkscrew_down","flat","flat","left_corkscrew_up","right_corkscrew_down","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","left_corkscrew_up","right_corkscrew_down","flat","flat","left_corkscrew_up","right_corkscrew_down","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25… (2594 chars)
  188. 17:34
    $0.0502
  189. 18:17

    v5 banked **6.90** — new best (5 inversions, 12 drops, length 632, intensity 8.03). Intensity headroom is now tighter (~2 left). For v6 I'll add a 6th inversion and a longer south leg for more length/airtime, watching intensity. Demolishing.

  190. 18:17
    demolish22 ms
    {"demolished":0}
  191. 18:17
    $0.1028
  192. 18:19
    new_ride8 ms
    {"dir":2,"ride_type":51,"x":40,"y":92}
    {"cursor":{"bank":0,"dir":2,"slope":0,"x":40,"y":92,"z":112},"ride_id":0}
  193. 18:19
    $0.0531
  194. 18:23

    v5's 6.90 is banked. Building v6 now — same opening, then extended west leg with a 6th corkscrew and longer south leg for more length.

  195. 18:23
    place_pieces20 ms
    {"pieces":["begin_station","middle_station","middle_station","end_station",{"speed":28,"t":"booster"},{"chain":true,"t":"flat_to_up_25"}]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":2,"slope":2,"x":46,"y":92,"z":120},"placed_this_call":6,"total_placed":6}
  196. 18:23
    best_result122 ms
    {"bounds":{"max_tile_x":61,"max_tile_y":92,"max_z":264,"min_tile_x":28,"min_tile_y":54,"min_z":112},"placed_pieces":["begin_station","middle_station","middle_station","end_station",{"speed":28,"t":"booster"},{"chain":true,"t":"flat_to_up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25_to_flat"},"flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat","flat_to_down_25","down_25","down_25","down_25","down_25","down_25","down_25","down_25","down_25_to_flat",{"speed":30,"t":"booster"},"flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","left_corkscrew_up","right_corkscrew_down","flat","flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat","flat","flat","left_corkscrew_up","right_corkscrew_down","flat","flat","left_corkscrew_up","right_corkscrew_down","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","left_corkscrew_up","right_corkscrew_down","flat","flat","left_corkscrew_up","right_corkscrew_down","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25… (2594 chars)
  197. 18:23
    $0.0542
  198. 18:25

    6.90 confirmed banked. Continuing v6 lift — placing the 7 chained `up_25`s separately to avoid the silent drop.

  199. 18:25
    place_pieces12 ms
    {"pieces":[{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25_to_flat"},"flat"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":2,"slope":0,"x":55,"y":92,"z":240},"placed_this_call":9,"total_placed":15}
  200. 18:25
    $0.0561
  201. 18:29

    Lift at z=240 confirmed. Now corner A, drop, booster, airtime hill, corkscrew #1, corner B (same as v5 opening).

  202. 18:29
    place_pieces23 ms
    {"pieces":["flat_to_right_bank","banked_right_turn_5","right_bank_to_flat","flat_to_down_25","down_25","down_25","down_25","down_25","down_25","down_25","down_25","down_25_to_flat",{"speed":30,"t":"booster"},"flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","left_corkscrew_up","right_corkscrew_down","flat","flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":0,"slope":0,"x":57,"y":66,"z":112},"placed_this_call":24,"total_placed":39}
  203. 18:29
    $0.0556
  204. 18:32

    I've completed the opening at (57,66) facing west with 39 pieces, and now I'm moving into the v6 west leg which includes 5 corkscrews and corner C, ending at (25,55) facing south.

  205. 18:32
    place_pieces12 ms
    {"pieces":["flat","flat","left_corkscrew_up","right_corkscrew_down","flat","flat","left_corkscrew_up","right_corkscrew_down","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","left_corkscrew_up","right_corkscrew_down","flat","flat","left_corkscrew_up","right_corkscrew_down","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","left_corkscrew_up","right_corkscrew_down","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":1,"slope":0,"x":25,"y":55,"z":112},"placed_this_call":27,"total_placed":66}
  206. 18:32
    $0.0554
  207. 18:39

    West leg landed exactly at (25,55) facing south. Now the south leg: s-bends, camelbacks, booster, ending at (28,89) before corner D.

  208. 18:39
    place_pieces20 ms
    {"pieces":["s_bend_right","s_bend_right","s_bend_right","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","s_bend_right","s_bend_left","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat",{"speed":27,"t":"booster"},"flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","flat","flat","flat","flat"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":1,"slope":0,"x":28,"y":87,"z":112},"placed_this_call":22,"total_placed":88}
  209. 18:39
    $0.0603
  210. 18:44

    South leg at (28,87) — 2 tiles short of corner D entry. Adding 2 flats, corner D, and the return.

  211. 18:44
    place_pieces13 ms
    {"pieces":["flat","flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat","flat","flat",{"speed":12,"t":"brakes"},{"speed":12,"t":"brakes"},{"speed":8,"t":"brakes"},"flat","flat","flat"]}
    {"circuit_closed":true,"cursor":{"bank":0,"dir":2,"slope":0,"x":40,"y":92,"z":112},"placed_this_call":13,"total_placed":101}
  212. 18:44
    $0.0571
  213. 18:46

    Circuit closed — 101 pieces, 6 inversions. Testing v6.

  214. 18:46
    finish_and_test773 ms
    {"bounds":{"max_tile_x":61,"max_tile_y":92,"max_z":264,"min_tile_x":25,"min_tile_y":51,"min_z":112},"placed_pieces":["begin_station","middle_station","middle_station","end_station",{"speed":28,"t":"booster"},{"chain":true,"t":"flat_to_up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25_to_flat"},"flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat","flat_to_down_25","down_25","down_25","down_25","down_25","down_25","down_25","down_25","down_25_to_flat",{"speed":30,"t":"booster"},"flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","left_corkscrew_up","right_corkscrew_down","flat","flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat","flat","flat","left_corkscrew_up","right_corkscrew_down","flat","flat","left_corkscrew_up","right_corkscrew_down","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","left_corkscrew_up","right_corkscrew_down","flat","flat","left_corkscrew_up","right_corkscrew_down","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25… (2645 chars)
  215. 18:46
    $0.0538
  216. 19:39

    v6 = **7.10**, new best (6 inversions, 13 drops, length 677, intensity 8.48). Intensity headroom is now ~1.5. For v7 I'll extend the north run to push the whole circuit further north, creating a much longer south leg (more length + airtime) while keeping 6 inversions to control intensity. Demolishing and rebuilding.

  217. 19:39
    demolish11 ms
    {"demolished":0}
  218. 19:39
    $0.1111
  219. 19:41
    new_ride13 ms
    {"dir":2,"ride_type":51,"x":40,"y":92}
    {"cursor":{"bank":0,"dir":2,"slope":0,"x":40,"y":92,"z":112},"ride_id":0}
  220. 19:41
    $0.0569
  221. 19:43
    place_pieces10 ms
    {"pieces":["begin_station","middle_station","middle_station","end_station",{"speed":28,"t":"booster"},{"chain":true,"t":"flat_to_up_25"}]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":2,"slope":2,"x":46,"y":92,"z":120},"placed_this_call":6,"total_placed":6}
  222. 19:43
    $0.0567
  223. 19:46
    place_pieces12 ms
    {"pieces":[{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25_to_flat"},"flat"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":2,"slope":0,"x":55,"y":92,"z":240},"placed_this_call":9,"total_placed":15}
  224. 19:46
    $0.0573
  225. 19:49

    Lift at z=240. Now corner A, drop, booster, corkscrew #1, extended north run, corner B — 38 pieces, expecting (56,47) facing west.

  226. 19:49
    place_pieces8 ms
    {"pieces":["flat_to_right_bank","banked_right_turn_5","right_bank_to_flat","flat_to_down_25","down_25","down_25","down_25","down_25","down_25","down_25","down_25","down_25_to_flat",{"speed":30,"t":"booster"},"flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","left_corkscrew_up","right_corkscrew_down","flat","flat","flat","flat","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","flat","flat","flat","flat","s_bend_right","s_bend_left","flat","flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":0,"slope":0,"x":57,"y":48,"z":112},"placed_this_call":38,"total_placed":53}
  227. 19:49
    $0.0600
  228. 19:55

    I've confirmed the cursor position at (57,48) facing west with 53 pieces placed, and now I'm planning the west leg with 5 corkscrews, 2 camelbacks, a mid booster, and corner C.

  229. 19:55
    place_pieces17 ms
    {"pieces":["flat","flat","left_corkscrew_up","right_corkscrew_down","flat","flat","left_corkscrew_up","right_corkscrew_down","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat",{"speed":27,"t":"booster"},"left_corkscrew_up","right_corkscrew_down","flat","flat","left_corkscrew_up","right_corkscrew_down","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","left_corkscrew_up","right_corkscrew_down","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":1,"slope":0,"x":24,"y":37,"z":112},"placed_this_call":28,"total_placed":81}
  230. 19:55
    $0.0640
  231. 20:00

    I've placed the west leg at (24,37) facing south with 81 pieces total. Now I'm building the long south leg with s-bends, camelbacks, and a booster, then corner D and the return to close the loop.

  232. 20:00
    place_pieces13 ms
    {"pieces":["s_bend_right","s_bend_right","s_bend_right","s_bend_right","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","s_bend_right","s_bend_left","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","s_bend_right","s_bend_left","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat",{"speed":27,"t":"booster"},"flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","s_bend_right","s_bend_left","flat","flat","flat","flat","flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat","flat","flat",{"speed":12,"t":"brakes"},{"speed":12,"t":"brakes"},{"speed":8,"t":"brakes"},"flat","flat","flat"]}
    {"circuit_closed":true,"cursor":{"bank":0,"dir":2,"slope":0,"x":40,"y":92,"z":112},"placed_this_call":43,"total_placed":124}
  233. 20:00
    $0.0616
  234. 20:02

    Circuit closed — 124 pieces. Testing v7.

  235. 20:03
    finish_and_test758 ms
    {"bounds":{"max_tile_x":61,"max_tile_y":92,"max_z":264,"min_tile_x":24,"min_tile_y":33,"min_z":112},"placed_pieces":["begin_station","middle_station","middle_station","end_station",{"speed":28,"t":"booster"},{"chain":true,"t":"flat_to_up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25_to_flat"},"flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat","flat_to_down_25","down_25","down_25","down_25","down_25","down_25","down_25","down_25","down_25_to_flat",{"speed":30,"t":"booster"},"flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","left_corkscrew_up","right_corkscrew_down","flat","flat","flat","flat","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","flat","flat","flat","flat","s_bend_right","s_bend_left","flat","flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat","flat","flat","left_corkscrew_up","right_corkscrew_down","flat","flat","left_corkscrew_up","right_corkscrew_down","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat",{"spe… (2967 chars)
  236. 20:03
    $0.0575
  237. 20:26

    v7 = **7.30**, new best. 124 pieces, 6 inversions, 15 drops, length 848, airtime 84, max speed 1.32M. But intensity is now 8.88 — only ~1.1 below the 10 ceiling where excitement tanks. Footprint is also near its limits (x 24-61). Let me confirm the banked score.

  238. 20:26
    best_result13 ms
    {"bounds":{"max_tile_x":61,"max_tile_y":92,"max_z":264,"min_tile_x":24,"min_tile_y":33,"min_z":112},"placed_pieces":["begin_station","middle_station","middle_station","end_station",{"speed":28,"t":"booster"},{"chain":true,"t":"flat_to_up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25_to_flat"},"flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat","flat_to_down_25","down_25","down_25","down_25","down_25","down_25","down_25","down_25","down_25_to_flat",{"speed":30,"t":"booster"},"flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","left_corkscrew_up","right_corkscrew_down","flat","flat","flat","flat","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","flat","flat","flat","flat","s_bend_right","s_bend_left","flat","flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat","flat","flat","left_corkscrew_up","right_corkscrew_down","flat","flat","left_corkscrew_up","right_corkscrew_down","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat",{"spe… (2967 chars)
  239. 20:26
    $0.0786
  240. 20:42
    todowrite6 ms
    {"todos":[{"content":"Plan a closed-circuit layout on paper using piece geometry","priority":"high","status":"completed"},{"content":"new_ride + build the circuit in chunks","priority":"high","status":"completed"},{"content":"Verify circuit_closed via get_state, fix any rejections","priority":"high","status":"completed"},{"content":"finish_and_test to bank a score EARLY","priority":"high","status":"completed"},{"content":"Iterate: rebuild to beat the banked score if time allows","priority":"medium","status":"completed"},{"content":"Confirm banked score via best_result","priority":"medium","status":"completed"}]}
    [
  {
    "content": "Plan a closed-circuit layout on paper using piece geometry",
    "status": "completed",
    "priority": "high"
  },
  {
    "content": "new_ride + build the circuit in chunks",
    "status": "completed",
    "priority": "high"
  },
  {
    "content": "Verify circuit_closed via get_state, fix any rejections",
    "status": "completed",
    "priority": "high"
  },
  {
    "content": "finish_and_test to bank a score EARLY",
    "status": "completed",
    "priority": "high"
  },
  {
    "content": "Iterate: rebuild to beat the banked score if time allows",
    "status": "completed",
    "priority": "medium"
  },
  {
    "content": "Confirm banked score via best_result",
    "status": "completed",
    "priority": "medium"
  }
]
  241. 20:42

    Confirmed banked: **7.30** (v7). Progression this round: 6.41 → 6.33 → 6.49 → 6.80 → 6.90 → 7.10 → **7.30**. Intensity is now 8.88 — only ~1.1 below the ceiling where excitement tanks, and the footprint is near its limits (x 24-61, y 33-92). Further inversions/speed risk pushing intensity over 10, and there's little room for pure length. Marginal returns are now negative-risk, so I'll bank 7.30 rather than gamble the remaining time.

  242. 20:42
    $0.0727
  243. 20:45

    Best coaster this round: 124-piece twister with 6 corkscrew inversions, 15 drops, 848ft length, 84 airtime ticks — **excitement 7.30**, intensity 8.88, no crashes, similarity 0.31 (up from 6.19 last round).

  244. 20:45
    $0.0603

← openrouter_qwen_qwen3.8-2.4t-a95b · 20260813-qwen38-design · all runs