rn1q1b1r/p1pp1k2/1p6/3P1ppp/1P6/P1Pb3P/1B2P1PR/R2nKBN1 b Q - 1 15
FEN state: rn1q1b1r/p1pp1k2/1p6/3P1ppp/1P6/P1Pb3P/1B2P1PR/R2nKBN1 b Q - 1 15 ; Best move: d1b2
The current state of the chess board is: Black rook at a8, black knight at b8, black queen at d8, black bishop at f8 and black rook at h8. Black pawn at a7, black pawn at c7, black pawn at d7 and black king at f7. Black pawn at b6. White pawn at d5, black pawn at f5, black pawn at g5 and black pawn at h5. White pawn at b4. White pawn at a3, white pawn at c3, black bishop at d3 and white pawn at h3. White bishop at b2, white pawn at e2, white pawn at g2 and white rook at h2. White rook at a1, black knight at d1, white king at e1, white bishop at f1 and white knight at g1. White queenside is the only castle move available. Half move number is 1. Full move number is 15. Black to move.