1r3b1r/2p1pk1p/1p2q2n/p2p1p2/b1P2Pp1/1P1P2PB/PBQP3P/R2K2NR b - - 4 21
FEN state: 1r3b1r/2p1pk1p/1p2q2n/p2p1p2/b1P2Pp1/1P1P2PB/PBQP3P/R2K2NR b - - 4 21 ; Best move: d5d4
The current state of the chess board is: Black rook at b8, black bishop at f8 and black rook at h8. Black pawn at c7, black pawn at e7, black king at f7 and black pawn at h7. Black pawn at b6, black queen at e6 and black knight at h6. Black pawn at a5, black pawn at d5 and black pawn at f5. Black bishop at a4, white pawn at c4, white pawn at f4 and black pawn at g4. White pawn at b3, white pawn at d3, white pawn at g3 and white bishop at h3. White pawn at a2, white bishop at b2, white queen at c2, white pawn at d2 and white pawn at h2. White rook at a1, white king at d1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 4. Full move number is 21. Black to move.