| FZU 1686 | 神龙的难题 |
| HDU1426 | Sudoku Killer |
| HDU1530 | Maximum Clique |
| HDU1603 | A Puzzling Problem |
| HDU2119 | Matrix |
| HDU2295 | Radar |
| HDU2518 | Dominoes |
| HDU2780 | Su-Su-Sudoku |
| HDU2828 | Lamp |
| HDU3111 | Sudoku |
| HDU3156 | Repair Depots |
| HDU3335 | Divisibility |
| HDU3418 | Beautiful Dream |
| HDU3498 | whosyourdaddy |
| HDU3529 | Bomberman - Just Search! |
| HDU3656 | Fire station |
| HDU3663 | Power Stations |
| HDU3909 | Sudoku |
| HDU3957 | Street Fighter |
| HDU4069 | Squiggly Sudoku |
| HDU4735 | Little Wish~ lyrical step~ |
| HUST1017 | Exact cover |
| POJ1084 | Square Destroyer [重复覆盖] |
| POJ2676 | Sudoku |
| POJ3074 | Sudoku |
| POJ3076 | Sudoku |
| POJ3435 | Sudoku Checker |
| POJ3740 | Easy Finding |
| SPOJ NQUEEN | Yet Another N-Queen Problem |
| ZOJ3038 | Triangle War II |
| ZOJ3209 | Treasure Map |