[Event "?"] [Site "?"] [Date "2025.06.23"] [Round "1"] [White "Helios-dev"] [Black "Helios-base"] [Result "0-1"] [FEN "rn1q1knr/pbp1ppbp/1p1p2p1/8/2PP4/2N1PN2/PP2BPPP/R1BQK2R b KQ - 0 1"] [GameDuration "00:00:00"] [GameEndTime "2025-06-23T15:19:25.373 UTC"] [GameStartTime "2025-06-23T15:19:24.444 UTC"] [PlyCount "9"] [SetUp "1"] [Termination "illegal move"] [TimeControl "4.019+0.04"] 1... Nf6 {-2.00 6/0 85 1596515} 2. a3 {+0.30 5/0 89 660947} e6 {-1.15 6/0 85 1352142} 3. h3 {-0.05 5/0 88 385662} Nc6 {-0.45 5/0 83 1173228} 4. b4 {0.00 5/0 83 621618} a5 {-0.55 6/0 85 1880230} 5. b5 {-0.10 6/0 81 412092} Ne7 {-0.50 5/0 122 1026382, White makes an illegal move: b4b5} 0-1