rnb4r/3ppkbp/1p3p1P/4q1p1/2PNP1P1/1P3P1B/P2P3R/RnBQK1N1 w Q - 3 21
FEN state: rnb4r/3ppkbp/1p3p1P/4q1p1/2PNP1P1/1P3P1B/P2P3R/RnBQK1N1 w Q - 3 21 ; Best move: h6g7
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8 and black rook at h8. Black pawn at d7, black pawn at e7, black king at f7, black bishop at g7 and black pawn at h7. Black pawn at b6, black pawn at f6 and white pawn at h6. Black queen at e5 and black pawn at g5. White pawn at c4, white knight at d4, white pawn at e4 and white pawn at g4. White pawn at b3, white pawn at f3 and white bishop at h3. White pawn at a2, white pawn at d2 and white rook at h2. White rook at a1, black knight at b1, white bishop at c1, white queen at d1, white king at e1 and white knight at g1. White queenside is the only castle move available. Half move number is 3. Full move number is 21. White to move.