1rbq1knr/np1p1p2/Q3p2b/2p1P1p1/pP3P1p/P6N/R1PP2PP/1NBK1B1R w - - 0 18
FEN state: 1rbq1knr/np1p1p2/Q3p2b/2p1P1p1/pP3P1p/P6N/R1PP2PP/1NBK1B1R w - - 0 18 ; Best move: a6a7
The current state of the chess board is: Black rook at b8, black bishop at c8, black queen at d8, black king at f8, black knight at g8 and black rook at h8. Black knight at a7, black pawn at b7, black pawn at d7 and black pawn at f7. White queen at a6, black pawn at e6 and black bishop at h6. Black pawn at c5, white pawn at e5 and black pawn at g5. Black pawn at a4, white pawn at b4, white pawn at f4 and black pawn at h4. White pawn at a3 and white knight at h3. White rook at a2, white pawn at c2, white pawn at d2, white pawn at g2 and white pawn at h2. White knight at b1, white bishop at c1, white king at d1, white bishop at f1 and white rook at h1. Both players have exhausted their castles. Half move number is 0. Full move number is 18. White to move.