rn1k4/pbq5/7p/1p1p4/P3P2n/1P2bP1P/2PNP3/RQ1K1BNR w - - 0 23
FEN state: rn1k4/pbq5/7p/1p1p4/P3P2n/1P2bP1P/2PNP3/RQ1K1BNR w - - 0 23 ; Best move: b1b2
The current state of the chess board is: Black rook at a8, black knight at b8 and black king at d8. Black pawn at a7, black bishop at b7 and black queen at c7. Black pawn at h6. Black pawn at b5 and black pawn at d5. White pawn at a4, white pawn at e4 and black knight at h4. White pawn at b3, black bishop at e3, white pawn at f3 and white pawn at h3. White pawn at c2, white knight at d2 and white pawn at e2. White rook at a1, white queen at b1, white king at d1, white bishop at f1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 0. Full move number is 23. White to move.