r4b1r/p1qbp3/2n1kpp1/1pP4p/1PP5/BQ2pKnP/P5P1/R4BNR w - - 0 23
FEN state: r4b1r/p1qbp3/2n1kpp1/1pP4p/1PP5/BQ2pKnP/P5P1/R4BNR w - - 0 23 ; Best move: c4b5
The current state of the chess board is: Black rook at a8, black bishop at f8 and black rook at h8. Black pawn at a7, black queen at c7, black bishop at d7 and black pawn at e7. Black knight at c6, black king at e6, black pawn at f6 and black pawn at g6. Black pawn at b5, white pawn at c5 and black pawn at h5. White pawn at b4 and white pawn at c4. White bishop at a3, white queen at b3, black pawn at e3, white king at f3, black knight at g3 and white pawn at h3. White pawn at a2 and white pawn at g2. White rook at a1, 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.