rn1q1knr/p1pbpp2/1p1p1b2/Q5pp/2PP2P1/P1N1PP2/1P1BB2P/R4KNR w - - 0 18
FEN state: rn1q1knr/p1pbpp2/1p1p1b2/Q5pp/2PP2P1/P1N1PP2/1P1BB2P/R4KNR w - - 0 18 ; Best move: a5d5
The current state of the chess board is: Black rook at a8, black knight at b8, black queen at d8, black king at f8, black knight at g8 and black rook at h8. Black pawn at a7, black pawn at c7, black bishop at d7, black pawn at e7 and black pawn at f7. Black pawn at b6, black pawn at d6 and black bishop at f6. White queen at a5, black pawn at g5 and black pawn at h5. White pawn at c4, white pawn at d4 and white pawn at g4. White pawn at a3, white knight at c3, white pawn at e3 and white pawn at f3. White pawn at b2, white bishop at d2, white bishop at e2 and white pawn at h2. White rook at a1, white king 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 18. White to move.