2q1r3/rppbkp1Q/4p2n/pNPp3P/P2P2p1/4PP1R/2nKB1P1/R1B3b1 b - - 4 21
FEN state: 2q1r3/rppbkp1Q/4p2n/pNPp3P/P2P2p1/4PP1R/2nKB1P1/R1B3b1 b - - 4 21 ; Best move: d7b5
The current state of the chess board is: Black queen at c8 and black rook at e8. Black rook at a7, black pawn at b7, black pawn at c7, black bishop at d7, black king at e7, black pawn at f7 and white queen at h7. Black pawn at e6 and black knight at h6. Black pawn at a5, white knight at b5, white pawn at c5, black pawn at d5 and white pawn at h5. White pawn at a4, white pawn at d4 and black pawn at g4. White pawn at e3, white pawn at f3 and white rook at h3. Black knight at c2, white king at d2, white bishop at e2 and white pawn at g2. White rook at a1, white bishop at c1 and black bishop at g1. Both players have exhausted their castles. Half move number is 4. Full move number is 21. Black to move.