r1bqk2r/pp1p1p2/n2b3n/P1p1p1pp/1PP1P2P/3B1PPR/3PK3/RNBQ2N1 b kq - 0 13
FEN state: r1bqk2r/pp1p1p2/n2b3n/P1p1p1pp/1PP1P2P/3B1PPR/3PK3/RNBQ2N1 b kq - 0 13 ; Best move: g5g4
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8, black king at e8 and black rook at h8. Black pawn at a7, black pawn at b7, black pawn at d7 and black pawn at f7. Black knight at a6, black bishop at d6 and black knight at h6. White pawn at a5, black pawn at c5, black pawn at e5, black pawn at g5 and black pawn at h5. White pawn at b4, white pawn at c4, white pawn at e4 and white pawn at h4. White bishop at d3, white pawn at f3, white pawn at g3 and white rook at h3. White pawn at d2 and white king at e2. White rook at a1, white knight at b1, white bishop at c1, white queen at d1 and white knight at g1. Black kingside and black queenside castles are available. Half move number is 0. Full move number is 13. Black to move.