rn1B1b2/ppp1npp1/4b2r/kN1p1B2/3P4/PP2PPPp/2P2K1P/1RQ3NR w - - 1 20
FEN state: rn1B1b2/ppp1npp1/4b2r/kN1p1B2/3P4/PP2PPPp/2P2K1P/1RQ3NR w - - 1 20 ; Best move: b5c7
The current state of the chess board is: Black rook at a8, black knight at b8, white bishop at d8 and black bishop at f8. Black pawn at a7, black pawn at b7, black pawn at c7, black knight at e7, black pawn at f7 and black pawn at g7. Black bishop at e6 and black rook at h6. Black king at a5, white knight at b5, black pawn at d5 and white bishop at f5. White pawn at d4. White pawn at a3, white pawn at b3, white pawn at e3, white pawn at f3, white pawn at g3 and black pawn at h3. White pawn at c2, white king at f2 and white pawn at h2. White rook at b1, white queen at c1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 1. Full move number is 20. White to move.