rn1qkb2/pp1npp2/3p4/5Pp1/P2P2b1/2PKP3/1P5r/RNBQ2N1 w q - 1 18
FEN state: rn1qkb2/pp1npp2/3p4/5Pp1/P2P2b1/2PKP3/1P5r/RNBQ2N1 w q - 1 18 ; Best move: d1g4
The current state of the chess board is: Black rook at a8, black knight at b8, black queen at d8, black king at e8 and black bishop at f8. Black pawn at a7, black pawn at b7, black knight at d7, black pawn at e7 and black pawn at f7. Black pawn at d6. White pawn at f5 and black pawn at g5. White pawn at a4, white pawn at d4 and black bishop at g4. White pawn at c3, white king at d3 and white pawn at e3. White pawn at b2 and black rook at h2. White rook at a1, white knight at b1, white bishop at c1, white queen at d1 and white knight at g1. Black queenside is the only castle move available. Half move number is 1. Full move number is 18. White to move.