r1bk1bn1/1ppp2p1/2n5/p2B3r/P1PPpp1P/1NK5/1P2PP1R/R3Q1N1 b - - 1 21
FEN state: r1bk1bn1/1ppp2p1/2n5/p2B3r/P1PPpp1P/1NK5/1P2PP1R/R3Q1N1 b - - 1 21 ; Best move: f8b4
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at d8, black bishop at f8 and black knight at g8. Black pawn at b7, black pawn at c7, black pawn at d7 and black pawn at g7. Black knight at c6. Black pawn at a5, white bishop at d5 and black rook at h5. White pawn at a4, white pawn at c4, white pawn at d4, black pawn at e4, black pawn at f4 and white pawn at h4. White knight at b3 and white king at c3. White pawn at b2, white pawn at e2, white pawn at f2 and white rook at h2. White rook at a1, white queen at e1 and white knight at g1. Both players have exhausted their castles. Half move number is 1. Full move number is 21. Black to move.