[Event "?"] [Site "?"] [Date "2025.04.22"] [Round "1"] [White "Serendipity-base"] [Black "Serendipity-dev"] [Result "0-1"] [FEN "rn1qkb1r/pppb1p1p/3p1np1/3Pp3/2P1P3/2N3P1/PP2NPBP/R1BQK2R w KQkq - 0 1"] [GameDuration "00:00:21"] [GameEndTime "2025-04-22T18:47:27.454 PDT"] [GameStartTime "2025-04-22T18:47:05.543 PDT"] [PlyCount "8"] [SetUp "1"] [Termination "illegal move"] [TimeControl "7.31+0.07"] 1. b4 {+0.89 8/18 522 20201} Bg7 {-0.94 10/22 601 62657} 2. h3 {+0.87 11/25 485 99088} O-O {-0.91 9/19 361 30963} 3. Bg5 {+1.00 10/23 1826 50478} a5 {-0.94 10/23 353 32560} 4. b5 {+0.96 6/13 440 2052} Bc8 {-0.88 9/22 646 19302, White makes an illegal move: b4b5} 0-1