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Past puzzles
Every puzzle from launch onward. Solved ones show a checkmark — pick up where you left off.
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- #952026-09-09Grouping
- #942026-09-08NULLs
- #932026-09-07Grouping
- #922026-09-06Grouping
- #912026-09-05Grouping
- #902026-09-04NULLs
- #892026-09-03NULLs
- #882026-09-02NULLs
- #872026-09-01Types
- #862026-08-31NULLs
- #852026-08-30Types
- #842026-08-29Types
- #832026-08-28Types
- #822026-08-27Aggregates
- #812026-08-26Aggregates
- #802026-08-25Grouping
- #792026-08-24Types
- #782026-08-23NULLs
- #772026-08-22Types
- #762026-08-21NULLs
- #752026-08-20Types
- #742026-08-19Aggregates
- #732026-08-18Types
- #722026-08-17Types
- #712026-08-16Grouping
- #702026-08-15NULLs
- #692026-08-14Grouping
- #682026-08-13Grouping
- #672026-08-12Grouping
- #662026-08-11NULLs
- #652026-08-10NULLs
- #642026-08-09NULLs
- #632026-08-08Types
- #622026-08-07NULLs
- #612026-08-06Types
- #602026-08-05Types
- #592026-08-04Types
- #582026-08-03Aggregates
- #572026-08-02Aggregates
- #562026-08-01Grouping
- #552026-07-31Types
- #542026-07-30NULLs
- #532026-07-29Types
- #522026-07-28NULLs
- #512026-07-27Types
- #502026-07-26Aggregates
- #492026-07-25Types
- #482026-07-24Types
- #472026-07-23Grouping
- #462026-07-22NULLs
- #452026-07-21Grouping
- #442026-07-20Grouping
- #432026-07-19Grouping
- #422026-07-18NULLs
- #412026-07-17NULLs
- #402026-07-16NULLs
- #392026-07-15Types
- #382026-07-14NULLs
- #372026-07-13Types
- #362026-07-12Types
- #352026-07-11Types
- #342026-07-10Aggregates
- #332026-07-09Aggregates
- #322026-07-08Grouping
- #312026-07-07Types
- #302026-07-06NULLs
- #292026-07-05Types
- #282026-07-04NULLs
- #272026-07-03Types
- #262026-07-02Aggregates
- #252026-07-01Types
- #242026-06-30Types
- #232026-06-29Grouping
- #222026-06-28NULLs
- #212026-06-27Grouping
- #202026-06-26Grouping
- #192026-06-25Grouping
- #182026-06-24NULLs
- #172026-06-23NULLs
- #162026-06-22NULLs
- #152026-06-21Types
- #142026-06-20NULLs
- #132026-06-19Types
- #122026-06-18Types
- #112026-06-17Types
- #102026-06-16Aggregates
- #92026-06-15Aggregates
- #82026-06-14Grouping
- #72026-06-13Types
- #62026-06-12NULLs
- #52026-06-11Types
- #42026-06-10NULLs
- #32026-06-09Types
- #22026-06-08Aggregates
- #12026-06-07Types