[Event "?"]
[Site "?"]
[Date "2025.06.23"]
[Round "1"]
[White "Helios-base"]
[Black "Helios-dev"]
[Result "1-0"]
[FEN "r1bqkb1r/1p1n2pp/4pp1n/p1Pp4/1P6/2P2P2/P3PBPP/RN1QKBNR b KQkq - 0 1"]
[GameDuration "00:00:00"]
[GameEndTime "2025-06-23T15:43:43.725 UTC"]
[GameStartTime "2025-06-23T15:43:43.376 UTC"]
[PlyCount "2"]
[SetUp "1"]
[Termination "illegal move"]
[TimeControl "4.03+0.04"]

1... axb4 {-0.50 6/0 85 503331}
2. cxb4 {-0.80 7/0 221 2491026, Black makes an illegal move: a5b4} 1-0