Based on 134 attempts across 44 problems
Learning Velocity
0.6/day
Improving
Review Compliance
83%
4 overdue
Overconfidence Rate
6%
9% underconfident
Stuck Problems
2
4+ attempts, no real progress
Predicted retrievability (R) vs. actual solve rate per bucket. The dashed line is perfect calibration — bars that match it mean the model's predictions align with your outcomes.
| Problem | Difficulty | Attempts | Best Result | Days Stuck |
|---|---|---|---|---|
| Alien Dictionary | Hard | 6 | Brute Force | 28d |
| Minimum Window Substring | Hard | 5 | No solution | 19d |
More SRS repetition won't fix these — try a different explanation, solution walkthrough, or ask for help.
Sorted by retention — weakest categories first.
| Category | Problems | Avg Retention | Stuck | Complexity Acc. | Avg to Optimal |
|---|---|---|---|---|---|
| Arrays & Hashing | 9 | 82% | 0 | 71% | 1.8 |
| Two Pointers | 5 | 74% | 0 | 66% | 2.1 |
| Stack | 7 | 77% | 0 | 63% | 1.9 |
| Sliding Window | 4 | 64% | 0 | 54% | 2.4 |
| Binary Search | 6 | 61% | 0 | 52% | 2.6 |
| Trees | 8 | 58% | 0 | 47% | 2.8 |
| Graphs | 3 | 44% | 0 | 38% | 3.3 |
| Advanced Graphs | 2 | 32% | 1 | 22% | — |
Overconfidence
6%
8 attempts: rated confidence ≥4 but performed poorly
Underconfidence
9%
12 attempts: rated confidence ≤2 but performed well