1rb1kbn1/pp1p1ppr/2p1p1Q1/2nP2q1/7p/BPP2N2/P3PPPP/RN2KBR1 b Q - 3 10
FEN state: 1rb1kbn1/pp1p1ppr/2p1p1Q1/2nP2q1/7p/BPP2N2/P3PPPP/RN2KBR1 b Q - 3 10 ; Best move: g5g6
The current state of the chess board is: Black rook at b8, black bishop at c8, black king at e8, black bishop at f8 and black knight at g8. Black pawn at a7, black pawn at b7, black pawn at d7, black pawn at f7, black pawn at g7 and black rook at h7. Black pawn at c6, black pawn at e6 and white queen at g6. Black knight at c5, white pawn at d5 and black queen at g5. Black pawn at h4. White bishop at a3, white pawn at b3, white pawn at c3 and white knight at f3. White pawn at a2, white pawn at e2, white pawn at f2, white pawn at g2 and white pawn at h2. White rook at a1, white knight at b1, white king at e1, white bishop at f1 and white rook at g1. White queenside is the only castle move available. Half move number is 3. Full move number is 10. Black to move.