Matrix 5×5
hardFind the missing number in a 5×5 matrix where rows and columns follow hidden rules.
How to play
A 5×5 grid of numbers follows a rule across its rows and/or columns, with one cell left blank. Work out the rule and fill in the missing value.
- Check rows and columns for a shared arithmetic or pattern-based rule.
- This is the largest, hardest grid — keep track of several rows at once.
- No paper or calculator — do it in your head.
Why this matters
At 5×5 this exercise approaches the difficulty ceiling of Raven's Advanced Progressive Matrices, the variant used to differentiate among high-scoring examinees — including in Mensa-style admission testing — where most standard-difficulty matrix items stop discriminating. Read more about the Raven's Progressive Matrices.
This game trains
Difficulty
This game uses a fixed difficulty that ramps up automatically as you play.
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