| 1. Put a ring on it. | BasicsData Structures Google | Easy 1 | 54% 105 / 195 |
| 2. Add to 13 | | Easy 1 | 62% 108 / 174 |
| 3. Know your limits. (Easy version) | Data StructuresNetworking +1 Akuna Capital | Easy 1.5 | 30% 34 / 115 |
| 4. It's over for you. (if you can't do this) | | Easy 1.5 | 22% 63 / 283 |
| 5. Know your limits. (Hard version) | Data StructuresBasics +1 Akuna Capital | Easy+ 2 | 41% 18 / 44 |
| 6. burn this image into the retina of my eye | BasicsMachine Learning Meta | Easy+ 2 | 85% 17 / 20 |
| 7. Crafter | | Easy+ 2 | 10% 9 / 87 |
| 8. CorrelationTTV (Easy version) | | Easy+ 2 | 20% 13 / 66 |
| 9. Pixel Budget | Data StructuresAlgorithms +1 Anthropic | Easy+ 2.5 | 100% 10 / 10 |
| 10. Ouroboros | | Easy+ 2.5 | 46% 16 / 35 |
| 11. Ok Garmin, save video | Data StructuresBasics Amazon | Easy+ 2.5 | 58% 11 / 19 |
| 12. Let's Connect! (Easy version) | Game TheoryBasics Citadel | Normal 3 | 71% 5 / 7 |
| 13. The Answer to the Ultimate Question of Life, the Universe, and Everything | BasicsMemory Management HRT | Normal 3 | 20% 24 / 123 |
| 14. Vector (Easy version) | BasicsData Structures Squarepoint | Normal 3 | 20% 8 / 41 |
| 15. Down the Rabbit-Hole | Machine LearningBasics +1 Jane Street | Normal 3 | 60% 9 / 15 |
| 16. Stronger Together | | Normal 3 | 57% 4 / 7 |
| 17. Time-Windowed Join | Data StructuresBasics Google | Normal 3.5 | 25% 4 / 16 |
| 18. The Amazing Race 1 | | Normal 3.5 | 17% 6 / 36 |
| 19. You're naive. | | Normal+ 4 | 25% 4 / 16 |
| 20. Escape the Matrix | Data StructuresMath +2 Voleon | Normal+ 4 | 31% 5 / 16 |
| 21. Omniscient Reader's Viewpoint | | Normal+ 4 | 36% 4 / 11 |
| 22. We live in a simulation. | | Normal+ 4 | 78% 7 / 9 |
| 23. CorrelationTTV (Hard version) | | Normal+ 4 | 11% 2 / 18 |
| 24. One step forward, two steps back | MathMachine Learning +1 Anthropic | Normal+ 4 | 100% 1 / 1 |
| 25. Multidimensional Virtual Arcade | Design PatternsGame Theory +1 Citadel | Normal+ 4.5 | 40% 2 / 5 |
| 26. Hashring | Data StructuresBasics Anthropic | Normal+ 4.5 | 22% 2 / 9 |
| 27. We were all SYNners. | | Hard 5 | 38% 3 / 8 |
| 28. Knock on wood | ConcurrencyOperating Systems +1 Nvidia | Hard 5 | 13% 5 / 38 |
| 29. One, Two, Skip a few... | Data StructuresMemory Management Optiver | Hard 5 | 50% 4 / 8 |
| 30. Do you think he clicks? | | Hard 5 | 38% 5 / 13 |
| 31. Design an in-memory file system | Data StructuresDesign Patterns +1 Meta | Hard 5.5 | 20% 4 / 20 |
| 32. Return by Death | BasicsMachine Learning +1 Anthropic | Hard 5.5 | 100% 1 / 1 |
| 33. I'm single. | Design PatternsData Structures +2 Akuna Capital | Harder 6 | 15% 7 / 47 |
| 34. Porphyrophobia | NetworkingDesign Patterns +1 Meta | Harder 6 | 8% 3 / 36 |
| 35. Let's Connect! (Hard version) | | Harder 6 | 100% 3 / 3 |
| 36. The NOexistenceN of you AND me | Data StructuresDesign Patterns +1 Millennium | Insane 7 | 100% 3 / 3 |
| 37. Return to Sender | | Insane 7.5 | 16% 4 / 25 |
| 38. Vector (Hard Version) | Data StructuresMemory Management Squarepoint | Insane 7.5 | 17% 3 / 18 |
| 39. Pool party! | Operating SystemsDesign Patterns +2 Akuna Capital | Expert 8 | 15% 5 / 34 |
| 40. Consumerism (Easy version) | Design PatternsConcurrency +2 | Master 9 | 38% 5 / 13 |
| 41. Stacked up (Easy Version) | ConcurrencyData Structures +1 | Master 9.5 | 40% 2 / 5 |
| 42. Consumerism (Hard version) | ConcurrencyData Structures +3 | Grandmaster 10 | 28% 8 / 29 |
| 43. Stacked up (Hard Version) | Memory ManagementOperating Systems +2 | Glitched 11 | 38% 3 / 8 |