r2q1b2/p3pkp1/b1pp1n1r/P1P1P2p/1pn2PpP/B6N/6B1/RQ2KR2 w Q - 0 21
FEN state: r2q1b2/p3pkp1/b1pp1n1r/P1P1P2p/1pn2PpP/B6N/6B1/RQ2KR2 w Q - 0 21 ; Best move: h3g5
The current state of the chess board is: Black rook at a8, black queen at d8 and black bishop at f8. Black pawn at a7, black pawn at e7, black king at f7 and black pawn at g7. Black bishop at a6, black pawn at c6, black pawn at d6, black knight at f6 and black rook at h6. White pawn at a5, white pawn at c5, white pawn at e5 and black pawn at h5. Black pawn at b4, black knight at c4, white pawn at f4, black pawn at g4 and white pawn at h4. White bishop at a3 and white knight at h3. White bishop at g2. White rook at a1, white queen at b1, white king at e1 and white rook at f1. White queenside is the only castle move available. Half move number is 0. Full move number is 21. White to move.