rn5r/pb1p1k2/1p2pn2/2pq2pp/1PBP3P/N1P2pP1/P3QK2/R1B2R2 w - - 2 23
FEN state: rn5r/pb1p1k2/1p2pn2/2pq2pp/1PBP3P/N1P2pP1/P3QK2/R1B2R2 w - - 2 23 ; Best move: c4d5
The current state of the chess board is: Black rook at a8, black knight at b8 and black rook at h8. Black pawn at a7, black bishop at b7, black pawn at d7 and black king at f7. Black pawn at b6, black pawn at e6 and black knight at f6. Black pawn at c5, black queen at d5, black pawn at g5 and black pawn at h5. White pawn at b4, white bishop at c4, white pawn at d4 and white pawn at h4. White knight at a3, white pawn at c3, black pawn at f3 and white pawn at g3. White pawn at a2, white queen at e2 and white king at f2. White rook at a1, white bishop at c1 and white rook at f1. Both players have exhausted their castles. Half move number is 2. Full move number is 23. White to move.