Tips & Strategies

1. Start with Large Numbers

Rows and columns with large clue numbers (like 8, 9, or 10) give you the most information. These long runs help you identify cells that must be filled, especially when combined with the grid edges.

Tip: In a 10x10 grid, a clue of "10" means the entire row or column is filled!

2. Use the Overlap Technique

When a clue is larger than half the grid size, you can find overlapping cells that must be filled. For example, in a 10-cell row with a clue of "7", cells 4-10 must be filled (because placing 7 anywhere else would exceed the boundaries).

Formula: If clue length > (grid size / 2), find the overlap by: clue - (grid size - clue)

3. Mark Impossible Cells

Use X marks strategically. If a clue can't fit in a certain area, mark those cells as empty. This eliminates possibilities and helps you narrow down where clues can go.

Example: If you have "1 1" in a 10-cell row and the first cell is filled, mark cells 2-3 as empty (they must separate the two groups).

4. Work from Both Ends

Sometimes you can determine cells from both the start and end of a row/column. Combine information from both directions to find cells that must be filled.

5. Count and Eliminate

For rows/columns with multiple clues, count the minimum space needed (sum of clues + gaps between). If clues like "3 2 1" need at least 8 cells (3+1+2+1+1), and some are already filled, you can determine remaining positions.

6. Cross-Reference Rows and Columns

Once you've filled some cells, use that information in the intersecting rows and columns. A filled cell might help you solve both its row and column clues simultaneously.

7. Look for Forced Positions

When there's only one way to place clues without conflicting, those positions are forced. Identify these early to make progress.

8. Practice Makes Perfect

Start with Easy puzzles to learn the patterns, then gradually move to Medium and Hard. Each puzzle teaches you new techniques and helps you recognize common clue patterns.

9. Use the Hint Sparingly

While hints are helpful when stuck, try to solve without them when possible. Each hint you use is a learning opportunity - observe where it was placed and why.

10. Take Breaks

If you're stuck, step away for a moment. Fresh eyes often spot patterns you missed. When you return, look at the puzzle from a different angle.