2b3nr/1r2k1b1/np1p1q2/p3pp1p/P1PpPp1P/N2P4/RP3PPR/4KB2 w - - 2 23
FEN state: 2b3nr/1r2k1b1/np1p1q2/p3pp1p/P1PpPp1P/N2P4/RP3PPR/4KB2 w - - 2 23 ; Best move: a3b5
The current state of the chess board is: Black bishop at c8, black knight at g8 and black rook at h8. Black rook at b7, black king at e7 and black bishop at g7. Black knight at a6, black pawn at b6, black pawn at d6 and black queen at f6. Black pawn at a5, black pawn at e5, black pawn at f5 and black pawn at h5. White pawn at a4, white pawn at c4, black pawn at d4, white pawn at e4, black pawn at f4 and white pawn at h4. White knight at a3 and white pawn at d3. White rook at a2, white pawn at b2, white pawn at f2, white pawn at g2 and white rook at h2. White king at e1 and white bishop at f1. Both players have exhausted their castles. Half move number is 2. Full move number is 23. White to move.