rn3b1r/3p1kp1/p1b2n1p/1pP2P2/7P/P1P5/2PBBP2/RQ2K1NR w Q - 3 21
FEN state: rn3b1r/3p1kp1/p1b2n1p/1pP2P2/7P/P1P5/2PBBP2/RQ2K1NR w Q - 3 21 ; Best move: h1h3
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at f8 and black rook at h8. Black pawn at d7, black king at f7 and black pawn at g7. Black pawn at a6, black bishop at c6, black knight at f6 and black pawn at h6. Black pawn at b5, white pawn at c5 and white pawn at f5. White pawn at h4. White pawn at a3 and white pawn at c3. White pawn at c2, white bishop at d2, white bishop at e2 and white pawn at f2. White rook at a1, white queen at b1, white king at e1, white knight at g1 and white rook at h1. White queenside is the only castle move available. Half move number is 3. Full move number is 21. White to move.