r1bqkbn1/2p1p2r/1pn3pp/1p1P1p2/5P2/P2PB3/1P2P1PP/1NK1RBNR b q - 1 13
FEN state: r1bqkbn1/2p1p2r/1pn3pp/1p1P1p2/5P2/P2PB3/1P2P1PP/1NK1RBNR b q - 1 13 ; Best move: d8d5
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 c7, black pawn at e7 and black rook at h7. Black pawn at b6, black knight at c6, black pawn at g6 and black pawn at h6. Black pawn at b5, white pawn at d5 and black pawn at f5. White pawn at f4. White pawn at a3, white pawn at d3 and white bishop at e3. White pawn at b2, white pawn at e2, white pawn at g2 and white pawn at h2. White knight at b1, white king at c1, white rook at e1, white bishop at f1, white knight at g1 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.