rn1k1b1r/N2p1pN1/b1p1p1n1/6Pp/1qP5/8/P2PP2P/1RB1KB1R b K - 0 15
FEN state: rn1k1b1r/N2p1pN1/b1p1p1n1/6Pp/1qP5/8/P2PP2P/1RB1KB1R b K - 0 15 ; Best move: b4b1
The current state of the chess board is: Black rook at a8, black knight at b8, black king at d8, black bishop at f8 and black rook at h8. White knight at a7, black pawn at d7, black pawn at f7 and white knight at g7. Black bishop at a6, black pawn at c6, black pawn at e6 and black knight at g6. White pawn at g5 and black pawn at h5. Black queen at b4 and white pawn at c4. White pawn at a2, white pawn at d2, white pawn at e2 and white pawn at h2. White rook at b1, white bishop at c1, white king at e1, white bishop at f1 and white rook at h1. White kingside is the only castle move available. Half move number is 0. Full move number is 15. Black to move.