r4b1r/pB1bpkp1/8/2pp1p1p/5P1P/4P2n/P2PK3/qNB3NR b - - 6 23
FEN state: r4b1r/pB1bpkp1/8/2pp1p1p/5P1P/4P2n/P2PK3/qNB3NR b - - 6 23 ; Best move: a1b1
The current state of the chess board is: Black rook at a8, black bishop at f8 and black rook at h8. Black pawn at a7, white bishop at b7, black bishop at d7, black pawn at e7, black king at f7 and black pawn at g7. Black pawn at c5, black pawn at d5, black pawn at f5 and black pawn at h5. White pawn at f4 and white pawn at h4. White pawn at e3 and black knight at h3. White pawn at a2, white pawn at d2 and white king at e2. Black queen at a1, white knight at b1, white bishop at c1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 6. Full move number is 23. Black to move.