| Min number of participants | 1 |
| Age | 10+ yrs. |
| Safety support by adult | Not required |
| Min duration | 15 min. |
| Cost | Low |
| Environment | Indoor / Outdoor |
A numeric grid puzzle, part crossword and part sudoku, where you fill cells with digits 1-9 so each run adds up to the sum shown in its shaded clue cell — and no digit repeats within a run.
A logic puzzle on a numbered grid: shade cells so no number repeats unshaded in any row or column, no two shaded cells touch, and the unshaded cells stay connected.
Tracing a path with a pencil through a printed maze of walls and passages, from a marked entrance to a marked exit, without crossing any walls or backtracking through dead ends.
