b2k1b1r/p2pp2p/n4ppn/1r4P1/1P6/1P1P1P2/RQPKN2P/5B1R b - - 5 21
FEN state: b2k1b1r/p2pp2p/n4ppn/1r4P1/1P6/1P1P1P2/RQPKN2P/5B1R b - - 5 21 ; Best move: a8b7
The current state of the chess board is: Black bishop at a8, black king at d8, black bishop at f8 and black rook at h8. Black pawn at a7, black pawn at d7, black pawn at e7 and black pawn at h7. Black knight at a6, black pawn at f6, black pawn at g6 and black knight at h6. Black rook at b5 and white pawn at g5. White pawn at b4. White pawn at b3, white pawn at d3 and white pawn at f3. White rook at a2, white queen at b2, white pawn at c2, white king at d2, white knight at e2 and white pawn at h2. White bishop at f1 and white rook at h1. Both players have exhausted their castles. Half move number is 5. Full move number is 21. Black to move.