r4b1R/pp1k1qp1/n1pp3n/4pp2/3Bb3/1P3NP1/P1P1PP2/RNQ1KB2 w Q - 3 17
FEN state: r4b1R/pp1k1qp1/n1pp3n/4pp2/3Bb3/1P3NP1/P1P1PP2/RNQ1KB2 w Q - 3 17 ; Best move: d4c3
The current state of the chess board is: Black rook at a8, black bishop at f8 and white rook at h8. Black pawn at a7, black pawn at b7, black king at d7, black queen at f7 and black pawn at g7. Black knight at a6, black pawn at c6, black pawn at d6 and black knight at h6. Black pawn at e5 and black pawn at f5. White bishop at d4 and black bishop at e4. White pawn at b3, white knight at f3 and white pawn at g3. White pawn at a2, white pawn at c2, white pawn at e2 and white pawn at f2. White rook at a1, white knight at b1, white queen at c1, white king at e1 and white bishop at f1. White queenside is the only castle move available. Half move number is 3. Full move number is 17. White to move.