| Gen 9 | Score: 68.96 | Best: 68.96 | Status: improved | Change: target-frac pivot, active-rows-only staircase | |
| Gen 16 | Score: 76.69 | Best: 76.69 | Status: improved | Change: sqrt(na) pivot sampling | |
| Gen 22 | Score: 77.19 | Best: 77.19 | Status: improved | Change: reversed staircase (bottom-to-top, left-to-right) | |
| Gen 34 | Score: 77.20 | Best: 77.20 | Status: improved | Change: single-walk (no < walk) + reversed staircase | |