TRACE · ROUND 1

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

claude-opus-5 · 20260724-opus5-twister · round 1 back to model →
events
59
tool calls
48
rejected
1
session
0:00
Session trace

  1. I'll start by loading the coaster tools.

  2. ToolSearch
    {"max_results":15,"query":"select:new_ride,place_piece,place_pieces,valid_next_pieces,piece_geometry,finish_and_test,get_state,best_result,undo_piece,demolish,screenshot"}
    No matching deferred tools found
  3. ToolSearch
    {"max_results":20,"query":"coaster roller ride track piece"}

  4. I'll start by understanding the piece catalog geometry.

  5. piece_geometry
    {"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)

  6. Loaded. Let me check the stock library briefly so I avoid similarity, then build.

  7. search_track_designs
    {"ride_type":51}
    {"designs":[{"name":"Atomizer","piece_count":126,"ride_type":51},{"name":"Contortion","piece_count":108,"ride_type":51},{"name":"Crush Hour","piece_count":94,"ride_type":51},{"name":"Flashback","piece_count":143,"ride_type":51},{"name":"Frightmare","piece_count":112,"ride_type":51},{"name":"Helixius","piece_count":82,"ride_type":51},{"name":"Liberty Loop","piece_count":51,"ride_type":51},{"name":"Lunar Launcher","piece_count":149,"ride_type":51},{"name":"Medusa","piece_count":159,"ride_type":51},{"name":"Silvertwist","piece_count":80,"ride_type":51},{"name":"Time Twister","piece_count":96,"ride_type":51}],"note":"final score is penalized for similarity to any of these designs"}

  8. I'll design my own layout. Starting the build:

  9. new_ride
    {"dir":0,"ride_type":51,"x":60,"y":60}
    {"cursor":{"bank":0,"dir":0,"slope":0,"x":60,"y":60,"z":112},"ride_id":0}
  10. place_pieces
    {"pieces":["begin_station","middle_station","middle_station","end_station",{"chain":true,"piece":"flat_to_up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25_to_flat"}]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":0,"slope":0,"x":43,"y":60,"z":304},"placed_this_call":17,"total_placed":17}
  11. place_pieces
    {"pieces":["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":0,"slope":0,"x":38,"y":60,"z":160},"placed_this_call":5,"total_placed":22}
  12. valid_next_pieces
    {"cursor":{"bank":0,"dir":0,"slope":0,"x":38,"y":60,"z":160},"valid_pieces":["flat","end_station","begin_station","middle_station","flat_to_up_25","flat_to_down_25","left_turn_5","right_turn_5","flat_to_left_bank","flat_to_right_bank","s_bend_left","s_bend_right","left_turn_3","right_turn_3","left_corkscrew_up","right_corkscrew_up","flat_to_up_60","flat_to_down_60","brakes","booster"]}
  13. place_piece
    {"piece":"flat_to_up_25"}
    {"circuit_closed":false,"cost":750,"cursor":{"bank":0,"dir":0,"slope":2,"x":37,"y":60,"z":168},"pieces_placed":23,"placed":"flat_to_up_25"}
  14. valid_next_pieces
    {"cursor":{"bank":0,"dir":0,"slope":2,"x":37,"y":60,"z":168},"valid_pieces":["up_25","up_25_to_up_60","up_25_to_flat","up_25_to_left_bank","up_25_to_right_bank","left_turn_5_up_25","right_turn_5_up_25","left_vertical_loop","right_vertical_loop","left_turn_3_up_25","right_turn_3_up_25","half_loop_up"]}
  15. place_piece
    {"piece":"left_vertical_loop"}
    {"circuit_closed":false,"cost":6200,"cursor":{"bank":0,"dir":0,"slope":6,"x":35,"y":59,"z":168},"pieces_placed":24,"placed":"left_vertical_loop"}
  16. place_pieces
    {"pieces":["down_25_to_flat","left_corkscrew_up"]}
    {"circuit_closed":false,"cursor":{"bank":15,"dir":3,"slope":0,"x":33,"y":57,"z":240},"placed_this_call":2,"total_placed":26}
  17. valid_next_pieces
    {"cursor":{"bank":15,"dir":3,"slope":0,"x":33,"y":57,"z":240},"valid_pieces":["left_corkscrew_down","right_corkscrew_down"]}
  18. place_piece
    {"piece":"left_corkscrew_down"}
    {"circuit_closed":false,"cost":2425,"cursor":{"bank":0,"dir":2,"slope":0,"x":35,"y":56,"z":160},"pieces_placed":27,"placed":"left_corkscrew_down"}
  19. place_pieces
    {"pieces":["right_corkscrew_up","left_corkscrew_down","left_corkscrew_up","right_corkscrew_down"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":2,"slope":0,"x":41,"y":56,"z":160},"placed_this_call":4,"total_placed":31}
  20. place_pieces
    {"pieces":["flat_to_down_25","down_25","down_25_to_flat","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25","down_25_to_flat","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","brakes","brakes","brakes","flat","flat","flat","flat","left_turn_5","left_turn_3"]}
    {"circuit_closed":true,"cursor":{"bank":0,"dir":0,"slope":0,"x":60,"y":60,"z":112},"placed_this_call":21,"total_placed":52}

  21. Circuit closed on the first try. Banking a score now:

  22. finish_and_test
    {"bounds":{"max_tile_x":62,"max_tile_y":60,"max_z":328,"min_tile_x":33,"min_tile_y":53,"min_z":112},"placed_pieces":["begin_station","middle_station","middle_station","end_station",{"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"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25_to_flat"},"flat_to_down_25","down_25_to_down_60","down_60","down_60_to_down_25","down_25_to_flat","flat_to_up_25","left_vertical_loop","down_25_to_flat","left_corkscrew_up","left_corkscrew_down","right_corkscrew_up","left_corkscrew_down","left_corkscrew_up","right_corkscrew_down","flat_to_down_25","down_25","down_25_to_flat","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25","down_25_to_flat","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","brakes","brakes","brakes","flat","flat","flat","flat","left_turn_5","left_turn_3"],"program":null,"rides":[{"average_speed":117980,"crashed":false,"excitement":6.389999866485596,"highest_d… (1774 chars)

  23. Banked **6.39**. Now a bigger, more aggressive v2:

  24. demolish
    {"demolished":0}
  25. new_ride
    {"dir":0,"ride_type":51,"x":60,"y":60}
    {"cursor":{"bank":0,"dir":0,"slope":0,"x":60,"y":60,"z":112},"ride_id":0}
  26. place_pieces
    {"pieces":["begin_station","middle_station","middle_station","end_station",{"chain":true,"piece":"flat_to_up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25_to_flat"},"flat_to_down_25","down_25","down_25_to_down_60","down_60","down_60","down_60_to_down_25","down_25","down_25_to_flat"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":0,"slope":0,"x":28,"y":60,"z":176},"placed_this_call":32,"total_placed":32}
  27. place_pieces
    {"pieces":["flat_to_up_25","half_loop_up","left_corkscrew_down","flat_to_down_25","right_turn_5_down_25","down_25_to_flat","s_bend_right","flat_to_up_25","right_vertical_loop","down_25_to_flat","s_bend_left"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":2,"slope":0,"x":42,"y":64,"z":176},"placed_this_call":11,"total_placed":43}
  28. place_pieces
    {"pieces":["left_corkscrew_up","right_corkscrew_down","right_corkscrew_up","left_corkscrew_down","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25","down_25","down_25","down_25_to_flat","flat_to_down_25","down_25_to_flat","brakes","brakes","brakes","right_turn_5","right_turn_3"]}
    {"circuit_closed":true,"cursor":{"bank":0,"dir":0,"slope":0,"x":60,"y":60,"z":112},"placed_this_call":18,"total_placed":61}
  29. finish_and_test
    {"bounds":{"max_tile_x":62,"max_tile_y":67,"max_z":440,"min_tile_x":25,"min_tile_y":60,"min_z":112},"placed_pieces":["begin_station","middle_station","middle_station","end_station",{"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"},{"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"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25_to_flat"},"flat_to_down_25","down_25","down_25_to_down_60","down_60","down_60","down_60_to_down_25","down_25","down_25_to_flat","flat_to_up_25","half_loop_up","left_corkscrew_down","flat_to_down_25","right_turn_5_down_25","down_25_to_flat","s_bend_right","flat_to_up_25","right_vertical_loop","down_25_to_flat","s_bend_left","left_corkscrew_up","right_corkscrew_down","right_corkscrew_up","left_corkscrew_down","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25","d… (2008 chars)

  30. Intensity 9.21 is near the cap and lateral G (3.05) is eating it. v3: banked turns, much longer course, more drops.

  31. demolish
    {"demolished":0}
  32. new_ride
    {"dir":0,"ride_type":51,"x":60,"y":60}
    {"cursor":{"bank":0,"dir":0,"slope":0,"x":60,"y":60,"z":112},"ride_id":0}
  33. place_pieces
    {"pieces":["begin_station","middle_station","middle_station","end_station",{"chain":true,"piece":"flat_to_up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25_to_flat"},"flat_to_down_25","down_25","down_25_to_down_60","down_60","down_60","down_60_to_down_25","down_25","down_25_to_flat","flat_to_up_25","half_loop_up","left_corkscrew_down"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":1,"slope":0,"x":28,"y":62,"z":256},"placed_this_call":35,"total_placed":35}
  34. place_pieces
    {"pieces":["flat_to_down_25","down_25","down_25_to_flat","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25","down_25","down_25_to_flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat","flat_to_up_25","right_vertical_loop","down_25_to_flat","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25","down_25","down_25_to_flat"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":2,"slope":0,"x":42,"y":73,"z":160},"placed_this_call":21,"total_placed":56}
  35. place_pieces
    {"pieces":["left_corkscrew_up","right_corkscrew_down","right_corkscrew_up","left_corkscrew_down","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25","down_25","down_25_to_flat","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","flat","flat","flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":3,"slope":0,"x":64,"y":69,"z":128},"placed_this_call":20,"total_placed":76}
  36. place_pieces
    {"pieces":["flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25","down_25_to_flat","brakes","brakes","right_turn_5","flat"]}
    {"circuit_closed":true,"cursor":{"bank":0,"dir":0,"slope":0,"x":60,"y":60,"z":112},"placed_this_call":9,"total_placed":85}
  37. finish_and_test
    {"bounds":{"max_tile_x":64,"max_tile_y":76,"max_z":440,"min_tile_x":25,"min_tile_y":60,"min_z":112},"placed_pieces":["begin_station","middle_station","middle_station","end_station",{"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"},{"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"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25_to_flat"},"flat_to_down_25","down_25","down_25_to_down_60","down_60","down_60","down_60_to_down_25","down_25","down_25_to_flat","flat_to_up_25","half_loop_up","left_corkscrew_down","flat_to_down_25","down_25","down_25_to_flat","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25","down_25","down_25_to_flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat","flat_to_up_25","right_vertical_loop","down_25_to_flat","flat_to_up_25","up_25_to_flat","flat_… (2375 chars)

  38. Excitement 6.65 banked. Intensity 9.88 is maxed — v4 moves the vertical loop to a slower spot to buy headroom, then spends it on more inversions and airtime.

  39. demolish
    {"demolished":0}
  40. new_ride
    {"dir":0,"ride_type":51,"x":60,"y":60}
    {"cursor":{"bank":0,"dir":0,"slope":0,"x":60,"y":60,"z":112},"ride_id":0}
  41. place_pieces
    {"pieces":["begin_station","middle_station","middle_station","end_station",{"chain":true,"piece":"flat_to_up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25_to_flat"},"flat_to_down_25","down_25","down_25_to_down_60","down_60","down_60","down_60_to_down_25","down_25","down_25_to_flat","flat_to_up_25","half_loop_up","left_corkscrew_down","flat_to_up_25","right_vertical_loop","down_25_to_flat"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":1,"slope":0,"x":29,"y":66,"z":256},"placed_this_call":38,"total_placed":38}
  42. place_pieces
    {"pieces":["flat_to_down_25","down_25","down_25","down_25_to_flat","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25","down_25","down_25_to_flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat","left_corkscrew_up","right_corkscrew_down","right_corkscrew_up","left_corkscrew_down","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25","down_25","down_25_to_flat"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":2,"slope":0,"x":45,"y":79,"z":144},"placed_this_call":23,"total_placed":61}
  43. place_pieces
    {"pieces":["left_corkscrew_up","right_corkscrew_down","right_corkscrew_up","left_corkscrew_down","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25","down_25_to_flat","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat"]}
    {"circuit_closed":false,"cursor":{"bank":0,"dir":3,"slope":0,"x":64,"y":75,"z":128},"placed_this_call":17,"total_placed":78}
  44. place_pieces
    {"pieces":["flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25","down_25_to_flat","brakes","brakes","brakes","brakes","flat","flat","flat","flat","right_turn_5","flat"]}
    {"circuit_closed":true,"cursor":{"bank":0,"dir":0,"slope":0,"x":60,"y":60,"z":112},"placed_this_call":15,"total_placed":93}
  45. finish_and_test
    {"bounds":{"max_tile_x":64,"max_tile_y":82,"max_z":440,"min_tile_x":25,"min_tile_y":60,"min_z":112},"placed_pieces":["begin_station","middle_station","middle_station","end_station",{"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"},{"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"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25_to_flat"},"flat_to_down_25","down_25","down_25_to_down_60","down_60","down_60","down_60_to_down_25","down_25","down_25_to_flat","flat_to_up_25","half_loop_up","left_corkscrew_down","flat_to_up_25","right_vertical_loop","down_25_to_flat","flat_to_down_25","down_25","down_25","down_25_to_flat","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25","down_25","down_25_to_flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat","left_corkscrew_up","right_c… (2496 chars)

  46. Intensity 14.87 crushed that one — 6 inversions is too many. Reverting to 4 inversions but keeping v4's longer, gentler layout:

  47. demolish
    {"demolished":0}
  48. new_ride
    {"dir":0,"ride_type":51,"x":60,"y":60}
    {"cursor":{"bank":0,"dir":0,"slope":0,"x":60,"y":60,"z":112},"ride_id":0}
  49. place_pieces
    {"pieces":["begin_station","middle_station","middle_station","end_station",{"chain":true,"piece":"flat_to_up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25_to_flat"},"flat_to_down_25","down_25","down_25_to_down_60","down_60","down_60","down_60_to_down_25","down_25","down_25_to_flat","flat_to_up_25","half_loop_up","left_corkscrew_down","flat_to_up_25","right_vertical_loop","down_25_to_flat","flat_to_down_25","down_25","down_25","down_25_to_flat","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25","down_25","down_25_to_flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat","left_corkscrew_up","right_corkscrew_down","right_cork… (1321 chars)
    {"circuit_closed":false,"cursor":{"bank":0,"dir":2,"slope":0,"x":45,"y":79,"z":144},"placed_this_call":61,"total_placed":61}
  50. place_pieces
    {"pieces":["flat_to_up_25","up_25_to_flat","flat","flat_to_down_25","down_25_to_flat","flat","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25","down_25_to_flat","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25_to_flat","flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25","down_25_to_flat","brakes","brakes","brakes","brakes","flat","flat","flat","flat","right_turn_5","flat"]}
    {"circuit_closed":true,"cursor":{"bank":0,"dir":0,"slope":0,"x":60,"y":60,"z":112},"placed_this_call":34,"total_placed":95}
  51. finish_and_test
    {"bounds":{"max_tile_x":64,"max_tile_y":82,"max_z":440,"min_tile_x":25,"min_tile_y":60,"min_z":112},"placed_pieces":["begin_station","middle_station","middle_station","end_station",{"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"},{"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"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25_to_flat"},"flat_to_down_25","down_25","down_25_to_down_60","down_60","down_60","down_60_to_down_25","down_25","down_25_to_flat","flat_to_up_25","half_loop_up","left_corkscrew_down","flat_to_up_25","right_vertical_loop","down_25_to_flat","flat_to_down_25","down_25","down_25","down_25_to_flat","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25","down_25","down_25_to_flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat","left_corkscrew_up","right_c… (2476 chars)

  52. New best: **6.80**. One quick tweak — trading the flat run-in for an extra airtime hill:

  53. place_piecesrejected
    {"pieces":[]}
    ride already finalized; use demolish + new_ride to rebuild
  54. demolish
    {"demolished":0}
  55. new_ride
    {"dir":0,"ride_type":51,"x":60,"y":60}
    {"cursor":{"bank":0,"dir":0,"slope":0,"x":60,"y":60,"z":112},"ride_id":0}
  56. place_pieces
    {"pieces":["begin_station","middle_station","middle_station","end_station",{"chain":true,"piece":"flat_to_up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25"},{"chain":true,"piece":"up_25_to_flat"},"flat_to_down_25","down_25","down_25_to_down_60","down_60","down_60","down_60_to_down_25","down_25","down_25_to_flat","flat_to_up_25","half_loop_up","left_corkscrew_down","flat_to_up_25","right_vertical_loop","down_25_to_flat","flat_to_down_25","down_25","down_25","down_25_to_flat","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25","down_25","down_25_to_flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat","left_corkscrew_up","right_corkscrew_down","right_cork… (1824 chars)
    {"circuit_closed":true,"cursor":{"bank":0,"dir":0,"slope":0,"x":60,"y":60,"z":112},"placed_this_call":95,"total_placed":95}
  57. finish_and_test
    {"bounds":{"max_tile_x":64,"max_tile_y":82,"max_z":440,"min_tile_x":25,"min_tile_y":60,"min_z":112},"placed_pieces":["begin_station","middle_station","middle_station","end_station",{"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"},{"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"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25_to_flat"},"flat_to_down_25","down_25","down_25_to_down_60","down_60","down_60","down_60_to_down_25","down_25","down_25_to_flat","flat_to_up_25","half_loop_up","left_corkscrew_down","flat_to_up_25","right_vertical_loop","down_25_to_flat","flat_to_down_25","down_25","down_25","down_25_to_flat","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25","down_25","down_25_to_flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat","left_corkscrew_up","right_c… (2531 chars)
  58. best_result
    {"bounds":{"max_tile_x":64,"max_tile_y":82,"max_z":440,"min_tile_x":25,"min_tile_y":60,"min_z":112},"placed_pieces":["begin_station","middle_station","middle_station","end_station",{"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"},{"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"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25"},{"chain":true,"t":"up_25_to_flat"},"flat_to_down_25","down_25","down_25_to_down_60","down_60","down_60","down_60_to_down_25","down_25","down_25_to_flat","flat_to_up_25","half_loop_up","left_corkscrew_down","flat_to_up_25","right_vertical_loop","down_25_to_flat","flat_to_down_25","down_25","down_25","down_25_to_flat","flat_to_up_25","up_25_to_flat","flat_to_down_25","down_25","down_25","down_25_to_flat","flat_to_right_bank","banked_right_turn_5","right_bank_to_flat","left_corkscrew_up","right_c… (2531 chars)

  59. Round 1 done — banked score is the current build. **Best: 95-piece steel twister — excitement 6.83, intensity 9.92, nausea 5.99, similarity 0.39 (no penalty).** Layout: 30 m chain lift → 60° plunge → **Immelmann** (half loop into a corkscrew rollout) → vertical loop → banked sweep south → **double corkscrew barrel-roll pair** → a snaking run of six airtime hills → banked hook back into the station. 589 m long, 12 drops, 4 inversions, 77 ticks of airtime. What the iterations taught me, in case it's useful next round: - Inversion count is the dominant intensity lever — going 4 → 6 inversions sent intensity from 9.9 to **14.9** and collapsed excitement to 2.15. - Drop height is a weak excitement lever (18 m → 30 m bought only +0.06) but an expensive intensity one. - Airtime hills and track length are the cheap wins: they added ~+0.4 excitement for almost no intensity. - The build is parked right at the ceiling (9.92 vs the ~10 cliff), so any further gain has to come from *buying* intensity headroom — softening the drop pull-out or the loop entry speed — before spending it on more length.

← claude-opus-5 · 20260724-opus5-twister · all runs