rn2kb2/p1p1pp1r/3p2p1/P2P3n/7P/2NBP1B1/R1P2PP1/3K2NR b q - 0 20
FEN state: rn2kb2/p1p1pp1r/3p2p1/P2P3n/7P/2NBP1B1/R1P2PP1/3K2NR b q - 0 20 ; Best move: f8g7
The current state of the chess board is: Black rook at a8, black knight at b8, black king at e8 and black bishop at f8. Black pawn at a7, black pawn at c7, black pawn at e7, black pawn at f7 and black rook at h7. Black pawn at d6 and black pawn at g6. White pawn at a5, white pawn at d5 and black knight at h5. White pawn at h4. White knight at c3, white bishop at d3, white pawn at e3 and white bishop at g3. White rook at a2, white pawn at c2, white pawn at f2 and white pawn at g2. White king at d1, white knight at g1 and white rook at h1. Black queenside is the only castle move available. Half move number is 0. Full move number is 20. Black to move.