r1b1r3/pp3k1p/n2pp2b/1Pp2pP1/2PP2P1/P1Q4P/3KP3/1RB2B1R b - - 0 21
FEN state: r1b1r3/pp3k1p/n2pp2b/1Pp2pP1/2PP2P1/P1Q4P/3KP3/1RB2B1R b - - 0 21 ; Best move: c5d4
The current state of the chess board is: Black rook at a8, black bishop at c8 and black rook at e8. Black pawn at a7, black pawn at b7, black king at f7 and black pawn at h7. Black knight at a6, black pawn at d6, black pawn at e6 and black bishop at h6. White pawn at b5, black pawn at c5, black pawn at f5 and white pawn at g5. White pawn at c4, white pawn at d4 and white pawn at g4. White pawn at a3, white queen at c3 and white pawn at h3. White king at d2 and white pawn at e2. White rook at b1, white bishop at c1, white bishop at f1 and white rook at h1. Both players have exhausted their castles. Half move number is 0. Full move number is 21. Black to move.