1r3b1r/ppkb1p2/2p2P1n/3p2p1/2QP2Pp/P4p1P/1PPK4/RNBR4 b - - 1 21
FEN state: 1r3b1r/ppkb1p2/2p2P1n/3p2p1/2QP2Pp/P4p1P/1PPK4/RNBR4 b - - 1 21 ; Best move: d5c4
The current state of the chess board is: Black rook at b8, black bishop at f8 and black rook at h8. Black pawn at a7, black pawn at b7, black king at c7, black bishop at d7 and black pawn at f7. Black pawn at c6, white pawn at f6 and black knight at h6. Black pawn at d5 and black pawn at g5. White queen at c4, white pawn at d4, white pawn at g4 and black pawn at h4. White pawn at a3, black pawn at f3 and white pawn at h3. White pawn at b2, white pawn at c2 and white king at d2. White rook at a1, white knight at b1, white bishop at c1 and white rook at d1. Both players have exhausted their castles. Half move number is 1. Full move number is 21. Black to move.