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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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- #952026-09-09Modern
- #942026-09-08Modern
- #932026-09-07Mutability
- #922026-09-06Mutability
- #912026-09-05Mutability
- #902026-09-04Comparisons
- #892026-09-03Quirks
- #882026-09-02Classes
- #872026-09-01Strings
- #862026-08-31Comparisons
- #852026-08-30Scope
- #842026-08-29Iteration
- #832026-08-28Iteration
- #822026-08-27Quirks
- #812026-08-26Mutability
- #802026-08-25Modern
- #792026-08-24Classes
- #782026-08-23Comparisons
- #772026-08-22Classes
- #762026-08-21Scope
- #752026-08-20Numbers
- #742026-08-19Scope
- #732026-08-18Quirks
- #722026-08-17Comparisons
- #712026-08-16Mutability
- #702026-08-15Scope
- #692026-08-14Iteration
- #682026-08-13Classes
- #672026-08-12Classes
- #662026-08-11Quirks
- #652026-08-10Scope
- #642026-08-09Scope
- #632026-08-08Iteration
- #622026-08-07Modern
- #612026-08-06Scope
- #602026-08-05Quirks
- #592026-08-04Scope
- #582026-08-03Classes
- #572026-08-02Iteration
- #562026-08-01Iteration
- #552026-07-31Comparisons
- #542026-07-30Scope
- #532026-07-29Classes
- #522026-07-28Strings
- #512026-07-27Modern
- #502026-07-26Iteration
- #492026-07-25Quirks
- #482026-07-24Iteration
- #472026-07-23Scope
- #462026-07-22Mutability
- #452026-07-21Comparisons
- #442026-07-20Strings
- #432026-07-19Iteration
- #422026-07-18Iteration
- #412026-07-17Iteration
- #402026-07-16Numbers
- #392026-07-15Scope
- #382026-07-14Quirks
- #372026-07-13Iteration
- #362026-07-12Numbers
- #352026-07-11Strings
- #342026-07-10Modern
- #332026-07-09Classes
- #322026-07-08Numbers
- #312026-07-07Strings
- #302026-07-06Modern
- #292026-07-05Strings
- #282026-07-04Classes
- #272026-07-03Quirks
- #262026-07-02Classes
- #252026-07-01Classes
- #242026-06-30Modern
- #232026-06-29Iteration
- #222026-06-28Quirks
- #212026-06-27Quirks
- #202026-06-26Quirks
- #192026-06-25Modern
- #182026-06-24Mutability
- #172026-06-23Mutability
- #162026-06-22Iteration
- #152026-06-21Scope
- #142026-06-20Scope
- #132026-06-19Classes
- #122026-06-18Quirks
- #112026-06-17Mutability
- #102026-06-16Modern
- #92026-06-15Quirks
- #82026-06-14Quirks
- #72026-06-13Iteration
- #62026-06-12Classes
- #52026-06-11Numbers
- #42026-06-10Quirks
- #32026-06-09Scope
- #22026-06-08Quirks
- #12026-06-07Comparisons