1r2kb1N/ppp1p1p1/4bn2/3p1p2/PP6/3R4/NqPPKP2/R1B3QB b - - 10 23
FEN state: 1r2kb1N/ppp1p1p1/4bn2/3p1p2/PP6/3R4/NqPPKP2/R1B3QB b - - 10 23 ; Best move: b2a1
The current state of the chess board is: Black rook at b8, black king at e8, black bishop at f8 and white knight at h8. Black pawn at a7, black pawn at b7, black pawn at c7, black pawn at e7 and black pawn at g7. Black bishop at e6 and black knight at f6. Black pawn at d5 and black pawn at f5. White pawn at a4 and white pawn at b4. White rook at d3. White knight at a2, black queen at b2, white pawn at c2, white pawn at d2, white king at e2 and white pawn at f2. White rook at a1, white bishop at c1, white queen at g1 and white bishop at h1. Both players have exhausted their castles. Half move number is 10. Full move number is 23. Black to move.