[Event "?"] [Site "?"] [Date "2025.06.27"] [Round "1"] [White "Helios-dev"] [Black "Helios-base"] [Result "0-1"] [FEN "r2qk2r/pbp1nppp/1pn1p3/3p4/1b6/1P1P1NP1/PBPNPPBP/R2Q1RK1 b kq - 0 1"] [GameDuration "00:00:01"] [GameEndTime "2025-06-27T23:28:57.617 UTC"] [GameStartTime "2025-06-27T23:28:56.568 UTC"] [PlyCount "5"] [SetUp "1"] [Termination "illegal move"] [TimeControl "4.14+0.04"] 1... O-O {-0.05 6/0 169 613287} 2. e4 {-0.20 4/0 143 1211373} Qd7 {0.00 5/0 106 266163} 3. d4 {-0.10 4/0 405 1623116} dxe4 {-0.10 5/0 152 598764, White makes an illegal move: 0000} 0-1