r1bq1r2/1p1pBkb1/2p2n2/1P3ppp/4P3/Pp1P1N1P/R1P2PP1/2Q1KB1R w K - 1 20
FEN state: r1bq1r2/1p1pBkb1/2p2n2/1P3ppp/4P3/Pp1P1N1P/R1P2PP1/2Q1KB1R w K - 1 20 ; Best move: e7d8
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8 and black rook at f8. Black pawn at b7, black pawn at d7, white bishop at e7, black king at f7 and black bishop at g7. Black pawn at c6 and black knight at f6. White pawn at b5, black pawn at f5, black pawn at g5 and black pawn at h5. White pawn at e4. White pawn at a3, black pawn at b3, white pawn at d3, white knight at f3 and white pawn at h3. White rook at a2, white pawn at c2, white pawn at f2 and white pawn at g2. White queen at c1, white king at e1, white bishop at f1 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.