r1b1k1r1/2np1p1Q/1pq1p2b/2p5/p2Pn1P1/N1P2N2/PP2PP2/1RB1KB1R w q - 1 21
FEN state: r1b1k1r1/2np1p1Q/1pq1p2b/2p5/p2Pn1P1/N1P2N2/PP2PP2/1RB1KB1R w q - 1 21 ; Best move: h7g8
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at e8 and black rook at g8. Black knight at c7, black pawn at d7, black pawn at f7 and white queen at h7. Black pawn at b6, black queen at c6, black pawn at e6 and black bishop at h6. Black pawn at c5. Black pawn at a4, white pawn at d4, black knight at e4 and white pawn at g4. White knight at a3, white pawn at c3 and white knight at f3. White pawn at a2, white pawn at b2, white pawn at e2 and white pawn at f2. White rook at b1, white bishop at c1, white king at e1, white bishop at f1 and white rook at h1. Black queenside is the only castle move available. Half move number is 1. Full move number is 21. White to move.