1rb1kbnr/3np3/pq1p2pp/1pP2p1P/1B1P4/2NQP2R/P1P2PP1/1R2KBN1 b k - 0 13
FEN state: 1rb1kbnr/3np3/pq1p2pp/1pP2p1P/1B1P4/2NQP2R/P1P2PP1/1R2KBN1 b k - 0 13 ; Best move: d6c5
The current state of the chess board is: Black rook at b8, black bishop at c8, black king at e8, black bishop at f8, black knight at g8 and black rook at h8. Black knight at d7 and black pawn at e7. Black pawn at a6, black queen at b6, black pawn at d6, black pawn at g6 and black pawn at h6. Black pawn at b5, white pawn at c5, black pawn at f5 and white pawn at h5. White bishop at b4 and white pawn at d4. White knight at c3, white queen at d3, white pawn at e3 and white rook at h3. White pawn at a2, white pawn at c2, white pawn at f2 and white pawn at g2. White rook at b1, white king at e1, white bishop at f1 and white knight at g1. Black kingside is the only castle move available. Half move number is 0. Full move number is 13. Black to move.