rn2qkr1/1bp1b1p1/p4p1p/1B6/P1P5/1P1p1PP1/RB1K3P/1N1nQ1NR w - - 4 18
FEN state: rn2qkr1/1bp1b1p1/p4p1p/1B6/P1P5/1P1p1PP1/RB1K3P/1N1nQ1NR w - - 4 18 ; Best move: b5e8
The current state of the chess board is: Black rook at a8, black knight at b8, black queen at e8, black king at f8 and black rook at g8. Black bishop at b7, black pawn at c7, black bishop at e7 and black pawn at g7. Black pawn at a6, black pawn at f6 and black pawn at h6. White bishop at b5. White pawn at a4 and white pawn at c4. White pawn at b3, black pawn at d3, white pawn at f3 and white pawn at g3. White rook at a2, white bishop at b2, white king at d2 and white pawn at h2. White knight at b1, black knight at d1, white queen at e1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 4. Full move number is 18. White to move.