1rbq1kn1/ppppp2r/n4p1b/6pQ/P1P2N1P/4P3/1P1P1PP1/RNB1KBR1 w Q - 1 10
FEN state: 1rbq1kn1/ppppp2r/n4p1b/6pQ/P1P2N1P/4P3/1P1P1PP1/RNB1KBR1 w Q - 1 10 ; Best move: f1d3
The current state of the chess board is: Black rook at b8, black bishop at c8, black queen at d8, black king at f8 and black knight at g8. Black pawn at a7, black pawn at b7, black pawn at c7, black pawn at d7, black pawn at e7 and black rook at h7. Black knight at a6, black pawn at f6 and black bishop at h6. Black pawn at g5 and white queen at h5. White pawn at a4, white pawn at c4, white knight at f4 and white pawn at h4. White pawn at e3. White pawn at b2, white pawn at d2, white pawn at f2 and white pawn at g2. White rook at a1, white knight at b1, white bishop at c1, 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 1. Full move number is 10. White to move.