2b1kb1r/prpq4/1p1p2p1/4p1pB/PP1nP2P/N7/2PP1PK1/RNBQ2R1 w - - 1 20
FEN state: 2b1kb1r/prpq4/1p1p2p1/4p1pB/PP1nP2P/N7/2PP1PK1/RNBQ2R1 w - - 1 20 ; Best move: h5g6
The current state of the chess board is: Black bishop at c8, black king at e8, black bishop at f8 and black rook at h8. Black pawn at a7, black rook at b7, black pawn at c7 and black queen at d7. Black pawn at b6, black pawn at d6 and black pawn at g6. Black pawn at e5, black pawn at g5 and white bishop at h5. White pawn at a4, white pawn at b4, black knight at d4, white pawn at e4 and white pawn at h4. White knight at a3. White pawn at c2, white pawn at d2, white pawn at f2 and white king at g2. White rook at a1, white knight at b1, white bishop at c1, white queen at d1 and white rook at g1. Both players have exhausted their castles. Half move number is 1. Full move number is 20. White to move.