r2qkb1r/pp1np2p/n1ppb1p1/8/1P2PBp1/3P4/PNP1KPBP/R2QN1R1 w q - 2 17
FEN state: r2qkb1r/pp1np2p/n1ppb1p1/8/1P2PBp1/3P4/PNP1KPBP/R2QN1R1 w q - 2 17 ; Best move: d3d4
The current state of the chess board is: Black rook at a8, black queen at d8, black king at e8, black bishop at f8 and black rook at h8. Black pawn at a7, black pawn at b7, black knight at d7, black pawn at e7 and black pawn at h7. Black knight at a6, black pawn at c6, black pawn at d6, black bishop at e6 and black pawn at g6. White pawn at b4, white pawn at e4, white bishop at f4 and black pawn at g4. White pawn at d3. White pawn at a2, white knight at b2, white pawn at c2, white king at e2, white pawn at f2, white bishop at g2 and white pawn at h2. White rook at a1, white queen at d1, white knight at e1 and white rook at g1. Black queenside is the only castle move available. Half move number is 2. Full move number is 17. White to move.