r2q1b1r/3nnk1p/b3p3/p2p1p2/1PP1Np1P/2P4R/P3P1P1/RNB1KB2 w Q - 2 17
FEN state: r2q1b1r/3nnk1p/b3p3/p2p1p2/1PP1Np1P/2P4R/P3P1P1/RNB1KB2 w Q - 2 17 ; Best move: e4d6
The current state of the chess board is: Black rook at a8, black queen at d8, black bishop at f8 and black rook at h8. Black knight at d7, black knight at e7, black king at f7 and black pawn at h7. Black bishop at a6 and black pawn at e6. Black pawn at a5, black pawn at d5 and black pawn at f5. White pawn at b4, white pawn at c4, white knight at e4, black pawn at f4 and white pawn at h4. White pawn at c3 and white rook at h3. White pawn at a2, white pawn at e2 and white pawn at g2. White rook at a1, white knight at b1, white bishop at c1, white king at e1 and white bishop at f1. White queenside is the only castle move available. Half move number is 2. Full move number is 17. White to move.