1nb1kb2/3ppp2/1r6/1R1P3p/1ppQ1P1N/2P1B3/1P1NP1rP/3nKB1R b K - 1 20
FEN state: 1nb1kb2/3ppp2/1r6/1R1P3p/1ppQ1P1N/2P1B3/1P1NP1rP/3nKB1R b K - 1 20 ; Best move: b6b5
The current state of the chess board is: Black knight at b8, black bishop at c8, black king at e8 and black bishop at f8. Black pawn at d7, black pawn at e7 and black pawn at f7. Black rook at b6. White rook at b5, white pawn at d5 and black pawn at h5. Black pawn at b4, black pawn at c4, white queen at d4, white pawn at f4 and white knight at h4. White pawn at c3 and white bishop at e3. White pawn at b2, white knight at d2, white pawn at e2, black rook at g2 and white pawn at h2. Black knight at d1, 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 1. Full move number is 20. Black to move.