Kakuro for Beginners — A Simple Step-by-Step Guide
Kakuro (also known as Cross Sums) is a logic puzzle where numbers act like letters in a crossword. Each white “run” of cells must add up to the sum shown in the adjacent clue. You may use digits 1 to 9, and no digit can repeat inside the same run.
Kakuro appeared in mid-20th century puzzle magazines and grew into a staple for solvers who enjoy logic, structure, and a bit of number play.
1. Start with the Shortest Runs
Short runs (2 or 3 cells) have fewer combinations, so they’re easiest.
Examples:
- 3 in 2 cells → only 1+2
- 4 in 2 → 1+3
- 16 in 2 → 7+9
These give you fast footholds.
[Insert example image of a short run here]
2. Use Pencil-Marks
When a cell could hold multiple digits, jot the candidates lightly.
As more runs get filled, candidates get eliminated and only one remains.
This keeps your solving clean and avoids guesswork.
[Insert image showing pencil-mark candidates]
3. Learn the “Magic Blocks”
Some sum+length pairs have only one possible combination.
Examples:
- 17 in 2 → 8 and 9
- 7 in 3 → 1, 2, 4
- 6 in 3 → 1, 2, 3
Even without knowing order yet, knowing the digits helps resolve crossing runs.
4. Cross-Analyze Intersections
Every white cell belongs to both a horizontal and a vertical run.
Use both constraints (sum, possible digits, pencil-marks) to eliminate possibilities.
Example:
If a vertical run can be 1+5 or 2+4, but the crossing horizontal run already uses a 5, then that vertical cell can’t be 5.
[Insert small example from Volume 1]
5. Avoid Guessing
Good Kakuro puzzles never require guessing.
Stick to:
- sum constraints
- non-repetition
- elimination
- intersections
This ensures a clean, logical solve every time.
Small Example from Volume 1
[Insert your puzzle example image with a short, 3–4 step explanation]
Quick Tips from Morgan Myst
- Short runs first
- Use pencil marks generously
- Learn the common sums
- Combine horizontal + vertical logic
- If stuck, check if you’re missing a “magic block”
Want more Kakuro? Download free sample puzzles from the Morgan Myst Collection.