1r2kb2/8/4pr2/npQp1P2/2P3BP/4B3/RPb1P3/1N2K1NR b K - 0 21
FEN state: 1r2kb2/8/4pr2/npQp1P2/2P3BP/4B3/RPb1P3/1N2K1NR b K - 0 21 ; Best move: f8c5
The current state of the chess board is: Black rook at b8, black king at e8 and black bishop at f8. Black pawn at e6 and black rook at f6. Black knight at a5, black pawn at b5, white queen at c5, black pawn at d5 and white pawn at f5. White pawn at c4, white bishop at g4 and white pawn at h4. White bishop at e3. White rook at a2, white pawn at b2, black bishop at c2 and white pawn at e2. White knight at b1, 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.