[Event "?"]
[Site "?"]
[Date "2025.06.23"]
[Round "1"]
[White "Helios-dev"]
[Black "Helios-base"]
[Result "0-1"]
[FEN "r1bqkb1r/pppp1ppp/2n1pn2/8/1PPP4/P1N2N2/4PPPP/R1BQKB1R b KQkq - 0 1"]
[GameDuration "00:00:00"]
[GameEndTime "2025-06-23T15:43:22.418 UTC"]
[GameStartTime "2025-06-23T15:43:22.066 UTC"]
[PlyCount "3"]
[SetUp "1"]
[Termination "illegal move"]
[TimeControl "4.03+0.04"]

1... d5 {-0.25 5/0 92 1003983} 2. b5 {-0.20 6/0 89 305106}
Na5 {-0.45 5/0 84 320371, White makes an illegal move: b4b5} 0-1