rn1b3r/pb3k1p/1pp3p1/1B1pPpq1/1P3Pn1/4P1R1/P1P4P/RNBK1Q1N w - - 0 18
FEN state: rn1b3r/pb3k1p/1pp3p1/1B1pPpq1/1P3Pn1/4P1R1/P1P4P/RNBK1Q1N w - - 0 18 ; Best move: f4g5
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at d8 and black rook at h8. Black pawn at a7, black bishop at b7, black king at f7 and black pawn at h7. Black pawn at b6, black pawn at c6 and black pawn at g6. White bishop at b5, black pawn at d5, white pawn at e5, black pawn at f5 and black queen at g5. White pawn at b4, white pawn at f4 and black knight at g4. White pawn at e3 and white rook at g3. White pawn at a2, white pawn at c2 and white pawn at h2. White rook at a1, white knight at b1, white bishop at c1, white king at d1, white queen at f1 and white knight at h1. Both players have exhausted their castles. Half move number is 0. Full move number is 18. White to move.