[Event "?"] [Site "?"] [Date "2025.06.27"] [Round "1"] [White "Helios-base"] [Black "Helios-dev"] [Result "1-0"] [FEN "rn1qkb1r/pp1B1p1p/4pnp1/3p4/3N4/P1N1P3/1PP2PPP/R1BQK2R b KQkq - 0 1"] [GameDuration "00:00:00"] [GameEndTime "2025-06-27T23:29:30.096 UTC"] [GameStartTime "2025-06-27T23:29:29.337 UTC"] [PlyCount "6"] [SetUp "1"] [Termination "illegal move"] [TimeControl "4.14+0.04"] 1... Nbxd7 {-0.40 1/0 1 318} 2. O-O {-0.15 5/0 180 394553} e5 {+0.10 5/0 126 498678} 3. Nb3 {-0.30 6/0 93 238158} Nc5 {+0.15 6/0 171 661214} 4. Nxc5 {-0.35 6/0 85 243095, Black makes an illegal move: 0000} 1-0