{"format":"rookloop-agent-v1","play_policy":"Play at full strength and try to win for your assigned side using your best chess judgment. Analyze the position before choosing: check immediate threats, checks, captures, king safety and likely opponent replies; compare candidate moves when alternatives exist. Do not choose randomly, take the first legal move without analysis, deliberately weaken your play or lose on purpose. Legal moves are options, not recommendations. Use your own reasoning without external chess engines. Honest mistakes are allowed.","turn_window":{"game_id":21,"version":77,"duration_seconds":90,"holder":null,"started_at":null,"expires_at":null},"claim_url":"/api/turn","game":{"id":21,"version":77,"status":"active","turn":"black","in_check":false,"position_token":"4fa433dbfc17317c8339e3112d99b01e5eabf614780de04184da30db8532506c","fen":"3r1k2/pp4pp/2R5/8/2P5/8/PP4PP/6K1 b - - 0 39","ascii":"   +------------------------+\n 8 | .  .  .  r  .  k  .  . |\n 7 | p  p  .  .  .  .  p  p |\n 6 | .  .  R  .  .  .  .  . |\n 5 | .  .  .  .  .  .  .  . |\n 4 | .  .  P  .  .  .  .  . |\n 3 | .  .  .  .  .  .  .  . |\n 2 | P  P  .  .  .  .  P  P |\n 1 | .  .  .  .  .  .  K  . |\n   +------------------------+\n     a  b  c  d  e  f  g  h","recent_moves":[{"ply":54,"san":"Rf7","uci":"f8f7"},{"ply":55,"san":"Qd5","uci":"b3d5"},{"ply":56,"san":"Nd8","uci":"c6d8"},{"ply":57,"san":"Qc4","uci":"d5c4"},{"ply":58,"san":"Kf8","uci":"g8f8"},{"ply":59,"san":"Qe4","uci":"c4e4"},{"ply":60,"san":"fxe4","uci":"f5e4"},{"ply":61,"san":"Rd4","uci":"d1d4"},{"ply":62,"san":"e3","uci":"e4e3"},{"ply":63,"san":"Re4","uci":"d4e4"},{"ply":64,"san":"Rxf4","uci":"f7f4"},{"ply":65,"san":"Rxf4+","uci":"e4f4"},{"ply":66,"san":"Nf7","uci":"d8f7"},{"ply":67,"san":"Re4","uci":"f4e4"},{"ply":68,"san":"Nd6","uci":"f7d6"},{"ply":69,"san":"Rxe3","uci":"e4e3"},{"ply":70,"san":"Nf5","uci":"d6f5"},{"ply":71,"san":"Re5","uci":"e3e5"},{"ply":72,"san":"Nd4","uci":"f5d4"},{"ply":73,"san":"c4","uci":"c2c4"},{"ply":74,"san":"Nc6","uci":"d4c6"},{"ply":75,"san":"Rc5","uci":"e5c5"},{"ply":76,"san":"Rd8","uci":"a8d8"},{"ply":77,"san":"Rxc6","uci":"c5c6"}],"legal_moves":["d8e8","d8d7","d8d6","d8d5","d8d4","d8d3","d8d2","d8d1","d8c8","d8b8","d8a8","f8g8","f8f7","f8e7","f8e8","a7a6","a7a5","b7b6","b7b5","b7c6","g7g6","g7g5","h7h6","h7h5"]},"move_request":{"game_id":21,"version":77,"position_token":"4fa433dbfc17317c8339e3112d99b01e5eabf614780de04184da30db8532506c","move":"CHOOSE_LEGAL_UCI","request_id":"NEW_UUID","comment":""},"links":{"full_state":"/api/game?view=full","history":"/api/games/21","moves":"/api/games/21/moves?after=0"}}