2q1k1nr/pr1p4/npp2ppp/1BP5/P3pPPP/N4P2/P1QP1K2/R1B3NR w - - 0 18
FEN state: 2q1k1nr/pr1p4/npp2ppp/1BP5/P3pPPP/N4P2/P1QP1K2/R1B3NR w - - 0 18 ; Best move: b5a6
The current state of the chess board is: Black queen at c8, black king at e8, black knight at g8 and black rook at h8. Black pawn at a7, black rook at b7 and black pawn at d7. Black knight at a6, black pawn at b6, black pawn at c6, black pawn at f6, black pawn at g6 and black pawn at h6. White bishop at b5 and white pawn at c5. White pawn at a4, black pawn at e4, white pawn at f4, white pawn at g4 and white pawn at h4. White knight at a3 and white pawn at f3. White pawn at a2, white queen at c2, white pawn at d2 and white king at f2. White rook at a1, white bishop at c1, 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.