| Martian Clock | 1600 | Solve |
| Matrix | 1600 | Solve |
| Matrix and Shifts | 1600 | Solve |
| Maximal Intersection | 1600 | Solve |
| Maximum Product Strikes Back | 1600 | Solve |
| Maximum Set | 1600 | Solve |
| Maximum Submatrix 2 | 1600 | Solve |
| Maximum Subrectangle | 1600 | Solve |
| Maximum Sum of Products | 1600 | Solve |
| Maximum Sum on Even Positions | 1600 | Solve |
| Maze | 1600 | Solve |
| Median Splits | 1600 | Solve |
| Meeting on the Line | 1600 | Solve |
| Memory Manager | 1600 | Solve |
| Memory and De-Evolution | 1600 | Solve |
| Menorah | 1600 | Solve |
| Merge Equals | 1600 | Solve |
| Mike and Shortcuts | 1600 | Solve |
| Military Problem | 1600 | Solve |
| Military Trainings | 1600 | Solve |
| Milking cows | 1600 | Solve |
| Min Cost String | 1600 | Solve |
| Mind Control | 1600 | Solve |