Great puzzles but after reformat of my tablet I lost 100000 points and am now bombarded by interrupting ads (some of which are disturbing.. Lily's garden, I am talking about you) 10x per puzzle Time to find a different puzzle developer Update February 11, 2022 Now, ads are appearing every 4 minutes. It takes approximately 1 hour to complete a 400 piece puzzle. You do the math on the annoying factor.