Free-to-take IQ tests · fluid reasoning
PROTEUS and QUADRAVA-FR are original, untimed IQ tests for curious minds, the gifted and the exceptionally gifted, created by Jo Christopher Resquites, MEng. Download them free and work at your own pace: no clock, no multiple choice, no trivia. When you are ready, the author scores your answers personally on a deviation-IQ scale (σ = 15).
New to IQ tests? Try the one-minute warm-up puzzle first
Two tests, one aim: to measure how well you reason when the rules are new. Start with QUADRAVA-FR if you are new to high-range testing; go to PROTEUS when you want the summit.
Everyone
Anyone can try, free and with no sign-up. Start with the one-minute warm-up puzzle, then take QUADRAVA-FR, the more approachable of the two tests.
Try the warm-up puzzleGifted range
QUADRAVA-FR is built for about IQ 125 to 170 and makes a strong first high-range test, and a natural step before PROTEUS.
Explore QUADRAVA-FRExtreme range
PROTEUS measures precisely to about IQ 185, and its scale runs on to a nominal ceiling of 250. It was built to challenge the most exceptional solvers.
Explore PROTEUSStart here · gifted range
Unfamiliar rules. Interacting relationships. New situations.
The summit · extreme range
Laws that hide, change and travel. Keep hold of them through every change.
Every score comes with a margin of error. Each test is most precise inside its own band, and the two bands overlap, so you can take QUADRAVA-FR first and go on to PROTEUS.
| Test | Precise range | Smallest error | Top of scale |
|---|---|---|---|
| QUADRAVA-FR | IQ 122–173 | about 2.9 IQ points (IQ 139–156) | reporting ceiling IQ 170 |
| PROTEUS | IQ 136–184 | about 3.9 IQ points (near IQ 160) | nominal ceiling IQ 250 |
No trivia, rare vocabulary or advanced mathematics. Every rule you need is on the page, so the score reflects reasoning, not schooling.
Both tests are untimed. Work for weeks if you wish and come back to a problem with fresh eyes. Depth counts, speed does not.
There are no options to pick from. You draw the panel, write the sequence or state the plan, so guessing cannot raise your score.
Scores are deviation IQs (σ 15) with their margin of error. The norms are published as provisional and are refined as more attempts come in.
Warm-up · not part of either test
Each row is a ring of ten cells, read one moment after another. A single black cell moves by a hidden law, and that law changes once. Tap the cell where it will be at t = 6.
Under the PROTEUS Principle of the Best Explanation, a law that has changed keeps its new form until the evidence shows another change.
Choose one cell in the row t = 6.
Download or read PROTEUS here, or open QUADRAVA-FR in Google Drive. There is no charge until you submit your answers for scoring.
Work alone with pencil and paper. There is no clock, so take the time each problem needs.
Pay the US$30 scoring fee securely through the PayPal link on the Submit page, and keep your receipt.
Email your answer sheet and receipt. Your score report comes back by email within 14 days.
Form B is the retest form: 40 new problems on the same blueprint and the same scale. It is not published online. It is emailed on request to candidates whose Form A answer sheet was scored at least six months earlier, and its score is reported separately, never averaged with Form A.
Meet the author
Licensed agricultural and biosystems engineer, local volunteer and ambassador of the Triple Nine Society for the Philippines, and member of Mensa and Intertel. Every problem on this site is his original work, and he scores every attempt personally.
“The smarter you are… the dumber you feel.”
