1r2k1n1/p1pqb1pr/4pp2/3p1P1p/RPPP3P/6P1/2K1PB2/1N2QBNR w - - 1 23
FEN state: 1r2k1n1/p1pqb1pr/4pp2/3p1P1p/RPPP3P/6P1/2K1PB2/1N2QBNR w - - 1 23 ; Best move: b4b5
The current state of the chess board is: Black rook at b8, black king at e8 and black knight at g8. Black pawn at a7, black pawn at c7, black queen at d7, black bishop at e7, black pawn at g7 and black rook at h7. Black pawn at e6 and black pawn at f6. Black pawn at d5, white pawn at f5 and black pawn at h5. White rook at a4, white pawn at b4, white pawn at c4, white pawn at d4 and white pawn at h4. White pawn at g3. White king at c2, white pawn at e2 and white bishop at f2. White knight at b1, white queen at e1, white bishop at f1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 1. Full move number is 23. White to move.