| BABY | hard DP, bitmasks |
| CERC07B | bitmasks same as DFLOOR |
| COURIER | dp bitmasks |
| CVJETICI | bit |
| GNY07H | dp bitmask tricky harder version of BYTESH1, M3TILE |
| HELPBOB | dp bitmask |
| HIST2 | dp bitmask |
| INTERVA2 | sorting datastructure bit |
| INVCNT | bit or merge sort |
| LSORT | dp bit |
| M3TILE | dp bitmask harder version of BYTESH1 |
| MCHAOS | bit |
| MMINPAID | dp / bfs bitmask |
| ORDERS | bit |
| PIZZALOC | bitmasks easy |
| RATING | bit |
| SUBSUMS | bitmasks binary search |
| TRSTAGE | dijkstra bitmasks medium |
| YODANESS | bit or segment tree or merge sort |
| BLOPER2 | binary search, meet in the middle, bitmasks |
| HAYBALE | bit |
| INGRED | dp bitmask |
| KRECT | dp, bit manipulation |
| MAIN112 | dp bitmask |
| NR2 | bit manipulation |
| QN02 | bit manipulation |
| SMARIO | bfs, bitmask |
| UCV2013K | dp bitmask |
| UPDATEIT | bit |
| VILLAGES | ad hoc, bit manipulation |