2r1kb2/2pnPp1r/4p3/p3n1pp/1PBP4/N2b3P/P1P3PR/R1BQK3 w Q - 0 20
FEN state: 2r1kb2/2pnPp1r/4p3/p3n1pp/1PBP4/N2b3P/P1P3PR/R1BQK3 w Q - 0 20 ; Best move: e7f8q
The current state of the chess board is: Black rook at c8, black king at e8 and black bishop at f8. Black pawn at c7, black knight at d7, white pawn at e7, black pawn at f7 and black rook at h7. Black pawn at e6. Black pawn at a5, black knight at e5, black pawn at g5 and black pawn at h5. White pawn at b4, white bishop at c4 and white pawn at d4. White knight at a3, black bishop at d3 and white pawn at h3. White pawn at a2, white pawn at c2, white pawn at g2 and white rook at h2. White rook at a1, white bishop at c1, white queen at d1 and white king at e1. White queenside is the only castle move available. Half move number is 0. Full move number is 20. White to move.