1rb4r/1p1kb3/1qp4n/p2p1pp1/2P4p/NP3n1N/P4PPP/1RBK1BR1 b - - 3 20
FEN state: 1rb4r/1p1kb3/1qp4n/p2p1pp1/2P4p/NP3n1N/P4PPP/1RBK1BR1 b - - 3 20 ; Best move: b6d4
The current state of the chess board is: Black rook at b8, black bishop at c8 and black rook at h8. Black pawn at b7, black king at d7 and black bishop at e7. Black queen at b6, black pawn at c6 and black knight at h6. Black pawn at a5, black pawn at d5, black pawn at f5 and black pawn at g5. White pawn at c4 and black pawn at h4. White knight at a3, white pawn at b3, black knight at f3 and white knight at h3. White pawn at a2, white pawn at f2, white pawn at g2 and white pawn at h2. White rook at b1, white bishop at c1, white king at d1, white bishop at f1 and white rook at g1. Both players have exhausted their castles. Half move number is 3. Full move number is 20. Black to move.