1r2k1n1/p3ppbr/Qpp1b2p/3pnPp1/2qN2P1/4P2B/PP1P3P/R1B1K2R w - - 0 18
FEN state: 1r2k1n1/p3ppbr/Qpp1b2p/3pnPp1/2qN2P1/4P2B/PP1P3P/R1B1K2R w - - 0 18 ; Best move: a6a7
The current state of the chess board is: Black rook at b8, black king at e8 and black knight at g8. Black pawn at a7, black pawn at e7, black pawn at f7, black bishop at g7 and black rook at h7. White queen at a6, black pawn at b6, black pawn at c6, black bishop at e6 and black pawn at h6. Black pawn at d5, black knight at e5, white pawn at f5 and black pawn at g5. Black queen at c4, white knight at d4 and white pawn at g4. White pawn at e3 and white bishop at h3. White pawn at a2, white pawn at b2, white pawn at d2 and white pawn at h2. White rook at a1, white bishop at c1, white king at e1 and white rook at h1. Both players have exhausted their castles. Half move number is 0. Full move number is 18. White to move.