JAXILLMIND FAMILY · Game 8 / 12
RULE FINDER
Inductive Reasoning
L4 · Analyze
Item format modelled on Raven's-style matrices — the five rule types in Carpenter, Just & Shell (1990): constant, progression, figure-addition, distribution-of-three, distribution-of-two.
Two things that go together. Find the match!
Level 1
Right 0
❤️❤️❤️
Tap Start to play — spot the answer!
Keep going — this game grows with you
- L2 Understandsay what each piece means before you start
- L4 Analyzeinfer the hidden rule from examples
- L5 Evaluateseveral rules fit the examples; pick the simplest that explains them all
- L6 Createinvent a rule and give examples that let someone else infer it
Starts at L2 · climbs to L6 — analyze, evaluate and create, not just remember.
TTCF — capability · time bar · failure mode · detection
| Capability | TTC | Failure mode | Detection |
|---|---|---|---|
| node → complete PWA compile | 1000ms | LLM leaked or transform > 1s | measured compile ms > 1000 → RED |
| every challenge + option renders | 50ms | option dropped or not one correct | options emitted == node AND one correct per challenge |
| offline play after first load | 50ms | precache drifts | targets ≡ PRECACHE ≡ disk |
| wrong tap costs a life; three ends run | 50ms | lives never decrement | livesLeft-- + gameOver at 0 |
| best streak survives reload | 50ms | localStorage throws | every localStorage touch in try/catch |
| tones via WebAudio | 50ms | AudioContext before gesture blocked | AudioContext only in a gesture handler, try/catch |
Source: products/xml/games/whats-the-rule.xml v0.6 · engine "choice" · compiled by gen-brain-game.mjs · gated by check-brain-game.mjs