r1bqkbn1/p1pp1pp1/np3r2/3PpP2/4P1p1/N3K2N/PPP4P/1RBQ1B1R b q - 1 13
FEN state: r1bqkbn1/p1pp1pp1/np3r2/3PpP2/4P1p1/N3K2N/PPP4P/1RBQ1B1R b q - 1 13 ; Best move: g4h3
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8, black king at e8, black bishop at f8 and black knight at g8. Black pawn at a7, black pawn at c7, black pawn at d7, black pawn at f7 and black pawn at g7. Black knight at a6, black pawn at b6 and black rook at f6. White pawn at d5, black pawn at e5 and white pawn at f5. White pawn at e4 and black pawn at g4. White knight at a3, white king at e3 and white knight at h3. White pawn at a2, white pawn at b2, white pawn at c2 and white pawn at h2. White rook at b1, white bishop at c1, white queen at d1, white bishop at f1 and white rook at h1. Black queenside is the only castle move available. Half move number is 1. Full move number is 13. Black to move.