r2qk1n1/ppPbbp2/6p1/1P2p3/4B1P1/3n1P1r/P1PPN2P/RNB1QR1K w q - 1 20
FEN state: r2qk1n1/ppPbbp2/6p1/1P2p3/4B1P1/3n1P1r/P1PPN2P/RNB1QR1K w q - 1 20 ; Best move: c7d8q
The current state of the chess board is: Black rook at a8, black queen at d8, black king at e8 and black knight at g8. Black pawn at a7, black pawn at b7, white pawn at c7, black bishop at d7, black bishop at e7 and black pawn at f7. Black pawn at g6. White pawn at b5 and black pawn at e5. White bishop at e4 and white pawn at g4. Black knight at d3, white pawn at f3 and black rook at h3. White pawn at a2, white pawn at c2, white pawn at d2, white knight at e2 and white pawn at h2. White rook at a1, white knight at b1, white bishop at c1, white queen at e1, white rook at f1 and white king at h1. Black queenside is the only castle move available. Half move number is 1. Full move number is 20. White to move.