1rb3nr/2pp1k2/pp4p1/1B3p1p/1Pn1p3/B1b1P1Pq/P1PPKP2/R2Q1R2 w - - 2 23
FEN state: 1rb3nr/2pp1k2/pp4p1/1B3p1p/1Pn1p3/B1b1P1Pq/P1PPKP2/R2Q1R2 w - - 2 23 ; Best move: b5c4
The current state of the chess board is: Black rook at b8, black bishop at c8, black knight at g8 and black rook at h8. Black pawn at c7, black pawn at d7 and black king at f7. Black pawn at a6, black pawn at b6 and black pawn at g6. White bishop at b5, black pawn at f5 and black pawn at h5. White pawn at b4, black knight at c4 and black pawn at e4. White bishop at a3, black bishop at c3, white pawn at e3, white pawn at g3 and black queen at h3. White pawn at a2, white pawn at c2, white pawn at d2, white king at e2 and white pawn at f2. White rook at a1, white queen at d1 and white rook at f1. Both players have exhausted their castles. Half move number is 2. Full move number is 23. White to move.