Oh, interesting! I’ll need to check this out, never heard of it. Though just reading through your spreadsheet/bingo board here, this does look crazy intense. 
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It is very intense, but also a lot of fun! The original goal of the challenge isn’t a blackout bingo, just to expand your horizons and read books you otherwise might not. And since I’m not trying to complete it in one year (now that would be intense), I’m just having fun fitting my books in the prompts 
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