1nb2b1r/1p4p1/2p2k1p/r2PPp2/1p6/2P1nP2/2B3PP/RNB1K1NR b K - 0 21
FEN state: 1nb2b1r/1p4p1/2p2k1p/r2PPp2/1p6/2P1nP2/2B3PP/RNB1K1NR b K - 0 21 ; Best move: f6e5
The current state of the chess board is: Black knight at b8, black bishop at c8, black bishop at f8 and black rook at h8. Black pawn at b7 and black pawn at g7. Black pawn at c6, black king at f6 and black pawn at h6. Black rook at a5, white pawn at d5, white pawn at e5 and black pawn at f5. Black pawn at b4. White pawn at c3, black knight at e3 and white pawn at f3. White bishop at c2, white pawn at g2 and white pawn at h2. White rook at a1, white knight at b1, white bishop at c1, white king at e1, white knight at g1 and white rook at h1. White kingside is the only castle move available. Half move number is 0. Full move number is 21. Black to move.