rq2kbn1/1p2p1pr/p2B1p1p/8/P7/3P1b2/R3PPPP/1NKQnB1R b q - 0 13
FEN state: rq2kbn1/1p2p1pr/p2B1p1p/8/P7/3P1b2/R3PPPP/1NKQnB1R b q - 0 13 ; Best move: b8d6
The current state of the chess board is: Black rook at a8, black queen at b8, black king at e8, black bishop at f8 and black knight at g8. Black pawn at b7, black pawn at e7, black pawn at g7 and black rook at h7. Black pawn at a6, white bishop at d6, black pawn at f6 and black pawn at h6. White pawn at a4. White pawn at d3 and black bishop at f3. White rook at a2, white pawn at e2, white pawn at f2, white pawn at g2 and white pawn at h2. White knight at b1, white king at c1, white queen at d1, black knight at e1, white bishop at f1 and white rook at h1. Black queenside is the only castle move available. Half move number is 0. Full move number is 13. Black to move.