Adblock removes more than the ads on
it also removes much of the functionality. If you go to either the archive or the current puzzle, the links that allow various options no longer show. You are stuck with only playing easy sudoku puzzles. The panel to the right, which has the scripted options and the embedded ads, does not display at all. To work around this bug I had to whitelist the site, which means that I get all those pesky ads. Adblock should not break site functionality.