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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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- #1402026-10-24Iteration
- #1392026-10-23Modern
- #1382026-10-22Iteration
- #1372026-10-21Quirks
- #1362026-10-20Mutability
- #1352026-10-19Mutability
- #1342026-10-18Quirks
- #1332026-10-17Modern
- #1322026-10-16Quirks
- #1312026-10-15Scope
- #1302026-10-14Strings
- #1292026-10-13Mutability
- #1282026-10-12Comparisons
- #1272026-10-11Mutability
- #1262026-10-10Quirks
- #1252026-10-09Numbers
- #1242026-10-08Mutability
- #1232026-10-07Comparisons
- #1222026-10-06Mutability
- #1212026-10-05Quirks
- #1202026-10-04Numbers
- #1192026-10-03Mutability
- #1182026-10-02Strings
- #1172026-10-01Quirks
- #1162026-09-30Quirks
- #1152026-09-29Quirks
- #1142026-09-28Numbers
- #1132026-09-27Strings
- #1122026-09-26Classes
- #1112026-09-25Classes
- #1102026-09-24Strings
- #1092026-09-23Mutability
- #1082026-09-22Classes
- #1072026-09-21Mutability
- #1062026-09-20Strings
- #1052026-09-19Modern
- #1042026-09-18Numbers
- #1032026-09-17Modern
- #1022026-09-16Modern
- #1012026-09-15Comparisons
- #1002026-09-14Numbers
- #992026-09-13Quirks
- #982026-09-12Comparisons
- #972026-09-11Quirks
- #962026-09-10Numbers
- #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