Fill thermometers to match the row and column clues
Rules
Fill each thermometer starting from the bulb (rounded end)
You cannot skip cells — fill consecutively from the bulb
A thermometer can be left completely empty
The number beside each row/column is the total filled cells in that line
Mark all cells with X in rows or columns where the clue is 0
If the clue equals the number of thermometer cells in that line, fill them all
Thermometer puzzles strengthen constraint satisfaction problem (CSP) solving skills. Processing row/column sum constraints and sequential ordering simultaneously activates working memory and logical reasoning.
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Brooker, H., et al. (2019). The relationship between the frequency of number-puzzle use and baseline cognitive function. International Journal of Geriatric Psychiatry, 34(7), 932-940.