rn3k1r/7p/bpp2pp1/1BbppnP1/p2PP2P/PPP4q/5PR1/RNBQK1N1 w Q - 0 21
FEN state: rn3k1r/7p/bpp2pp1/1BbppnP1/p2PP2P/PPP4q/5PR1/RNBQK1N1 w Q - 0 21 ; Best move: g1h3
The current state of the chess board is: Black rook at a8, black knight at b8, black king at f8 and black rook at h8. Black pawn at h7. Black bishop at a6, black pawn at b6, black pawn at c6, black pawn at f6 and black pawn at g6. White bishop at b5, black bishop at c5, black pawn at d5, black pawn at e5, black knight at f5 and white pawn at g5. Black pawn at a4, white pawn at d4, white pawn at e4 and white pawn at h4. White pawn at a3, white pawn at b3, white pawn at c3 and black queen at h3. White pawn at f2 and white rook at g2. White rook at a1, white 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 0. Full move number is 21. White to move.