1nbq2nr/3pk1pp/p7/p1p2p2/PP2p1PP/N3PN2/1P1P1P2/R1BQKR2 b Q - 0 13
FEN state: 1nbq2nr/3pk1pp/p7/p1p2p2/PP2p1PP/N3PN2/1P1P1P2/R1BQKR2 b Q - 0 13 ; Best move: a5b4
The current state of the chess board is: Black knight at b8, black bishop at c8, black queen at d8, black knight at g8 and black rook at h8. Black pawn at d7, black king at e7, black pawn at g7 and black pawn at h7. Black pawn at a6. Black pawn at a5, black pawn at c5 and black pawn at f5. White pawn at a4, white pawn at b4, black pawn at e4, white pawn at g4 and white pawn at h4. White knight at a3, white pawn at e3 and white knight at f3. White pawn at b2, white pawn at d2 and white pawn at f2. White rook at a1, white bishop at c1, white queen at d1, white king at e1 and white rook at f1. White queenside is the only castle move available. Half move number is 0. Full move number is 13. Black to move.