4kb1r/rq2pp1p/npppb3/4B1p1/NP2PP2/3P4/P1P1B1PP/2RQK2R w K - 1 20
FEN state: 4kb1r/rq2pp1p/npppb3/4B1p1/NP2PP2/3P4/P1P1B1PP/2RQK2R w K - 1 20 ; Best move: e5h8
The current state of the chess board is: Black king at e8, black bishop at f8 and black rook at h8. Black rook at a7, black queen at b7, black pawn at e7, black pawn at f7 and black pawn at h7. Black knight at a6, black pawn at b6, black pawn at c6, black pawn at d6 and black bishop at e6. White bishop at e5 and black pawn at g5. White knight at a4, white pawn at b4, white pawn at e4 and white pawn at f4. White pawn at d3. White pawn at a2, white pawn at c2, white bishop at e2, white pawn at g2 and white pawn at h2. White rook at c1, white queen at d1, white king at e1 and white rook at h1. White kingside is the only castle move available. Half move number is 1. Full move number is 20. White to move.