[Event "?"]
[Site "?"]
[Date "2025.06.30"]
[Round "1"]
[White "Heimdall-base"]
[Black "Heimdall-dev"]
[Result "1-0"]
[FEN "1nbqkbnr/r2p1p1p/p1p1p1p1/1P6/3P4/2N1PN2/PP2BPPP/R1BQK2R b KQk - 0 1"]
[GameDuration "00:00:00"]
[GameEndTime "2025-06-30T23:20:20.388 CEST"]
[GameStartTime "2025-06-30T23:20:19.541 CEST"]
[PlyCount "2"]
[SetUp "1"]
[Termination "illegal move"]
[TimeControl "5.09+0.05"]

1... axb5 {-0.85 14/25 198 269711}
2. O-O {+0.72 15/26 465 650565, Black makes an illegal move: a6b5} 1-0