rnb1k2r/3p3p/2p5/p1bNpP2/PpPP1Pp1/4B2P/6P1/R2K1BNR w - - 2 18
FEN state: rnb1k2r/3p3p/2p5/p1bNpP2/PpPP1Pp1/4B2P/6P1/R2K1BNR w - - 2 18 ; Best move: d5f6
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black king at e8 and black rook at h8. Black pawn at d7 and black pawn at h7. Black pawn at c6. Black pawn at a5, black bishop at c5, white knight at d5, black pawn at e5 and white pawn at f5. White pawn at a4, black pawn at b4, white pawn at c4, white pawn at d4, white pawn at f4 and black pawn at g4. White bishop at e3 and white pawn at h3. White pawn at g2. White rook at a1, white king at d1, white bishop at f1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 2. Full move number is 18. White to move.