rn2kbqr/4pp2/P6n/p2p2pp/PB1P1P2/3QPBP1/3N3P/RN2K2R w KQkq - 1 23
FEN state: rn2kbqr/4pp2/P6n/p2p2pp/PB1P1P2/3QPBP1/3N3P/RN2K2R w KQkq - 1 23 ; Best move: f3d5
The current state of the chess board is: Black rook at a8, black knight at b8, black king at e8, black bishop at f8, black queen at g8 and black rook at h8. Black pawn at e7 and black pawn at f7. White pawn at a6 and black knight at h6. Black pawn at a5, black pawn at d5, black pawn at g5 and black pawn at h5. White pawn at a4, white bishop at b4, white pawn at d4 and white pawn at f4. White queen at d3, white pawn at e3, white bishop at f3 and white pawn at g3. White knight at d2 and white pawn at h2. White rook at a1, white knight at b1, white king at e1 and white rook at h1. White kingside, white queenside, black kingside and black queenside castles are available. Half move number is 1. Full move number is 23. White to move.