Keep the next number in mind
Start with 1, then find 2, then 3, continuing in ascending order. The Find prompt tells you which number comes next. Locate that number before you select it.
A correct selection does not remove or permanently mark its cell. Every number stays visible, so use the next-number prompt to keep your place rather than looking for empty spaces.
Level 1 uses a 3×3 grid containing 1 to 9. The larger levels use 4×4 and 5×5 grids.
The prompt changes, not the grid
Suppose you have selected 1, 2 and 3 correctly. The prompt now says Find 4. The grid still shows 1, 2 and 3 in their original places, with the same appearance as the other numbers.
If you select a different number, the next number does not change. Find 4 and continue. The review reports wrong selections and active time; finishing accurately matters, not just tapping quickly.
Recover without skipping ahead
You have selected 1, 2, 3, 4 and 5. While looking for the next number, you select 9 by mistake.
A wrong selection does not advance the sequence. Decide which number to find next. The practice continues until you finish the grid, and a full round contains three grids.
Try it
After 1 through 5 and a mistaken tap on 9, which number comes next?
- 6
- 7
Show the answer
6
Correct. Only a correct selection advances the sequence. You still need 6 before moving on to 7.
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Practice Schulte table