r2q1b1r/2p1p2p/1p2P1kB/p2p2p1/n2P4/P2P1PPP/1P3N2/R3K1NR b K - 0 23
FEN state: r2q1b1r/2p1p2p/1p2P1kB/p2p2p1/n2P4/P2P1PPP/1P3N2/R3K1NR b K - 0 23 ; Best move: f8h6
The current state of the chess board is: Black rook at a8, black queen at d8, black bishop at f8 and black rook at h8. Black pawn at c7, black pawn at e7 and black pawn at h7. Black pawn at b6, white pawn at e6, black king at g6 and white bishop at h6. Black pawn at a5, black pawn at d5 and black pawn at g5. Black knight at a4 and white pawn at d4. White pawn at a3, white pawn at d3, white pawn at f3, white pawn at g3 and white pawn at h3. White pawn at b2 and white knight at f2. White rook at a1, 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 23. Black to move.