1rbqk1n1/1pb5/n4p2/1Ppp3r/p3pp2/P3PP1P/N1PP4/R1BQK1R1 w Q - 0 18
FEN state: 1rbqk1n1/1pb5/n4p2/1Ppp3r/p3pp2/P3PP1P/N1PP4/R1BQK1R1 w Q - 0 18 ; Best move: g1g8
The current state of the chess board is: Black rook at b8, black bishop at c8, black queen at d8, black king at e8 and black knight at g8. Black pawn at b7 and black bishop at c7. Black knight at a6 and black pawn at f6. White pawn at b5, black pawn at c5, black pawn at d5 and black rook at h5. Black pawn at a4, black pawn at e4 and black pawn at f4. White pawn at a3, white pawn at e3, white pawn at f3 and white pawn at h3. White knight at a2, white pawn at c2 and white pawn at d2. White rook at a1, white bishop at c1, white queen at d1, white king at e1 and white rook at g1. White queenside is the only castle move available. Half move number is 0. Full move number is 18. White to move.