Our method

15 puzzles, five kinds

• 5 matrices: a 3 by 3 grid with one box missing. Each grid follows one or more readable rules about shape, color, size, number or orientation.
• 3 number sequences: find the number that continues a series, sometimes two interleaved series.
• 3 rotation puzzles: recognize the same piece once rotated, without mistaking it for its mirror image.
• 2 odd ones out: among five shapes, spot the one that breaks the rule the other four follow.
• 2 balances: each shape is worth a number; equations let you work out the value asked for.

Every puzzle is nonverbal: no vocabulary, no general knowledge. Puzzles are generated on every attempt, with a single right answer and plausible distractors. They come in three levels of five: easy, medium, then hard, where you have to juggle several rules at once.

From correct answers to a score

Your number of correct answers is compared with a reference performance, then converted onto the usual IQ scale. The percentile shown (“better than X%”) is computed from that score on a curve with a mean of 100 and a standard deviation of 15. With only 15 questions, precision is limited, so we show a ±6-point range around the score.

A deliberately accessible test

The free test is designed to be quick and enjoyable. The puzzles lean easy and the conversion is lenient: your score here will probably be a bit higher than the one from an assessment by a psychologist. The lowest score shown is 85 and the highest 145. The norms will be adjusted as real test results come in.

Answers that are too fast

If your answers average under 1.5 seconds per question, the sheet isn't graded: at that pace, we'd be measuring chance, not reasoning.

What this test is not

Educational entertainment, not a clinical tool. It can't diagnose giftedness or assess a learning difficulty. For that, a full assessment (WAIS or WISC) with a psychologist remains the only reference. To read your score, see the IQ scale.