Training/Pattern recognition/Sequence Completion

Sequence
Completion

Five tiles change step by step — the arrow turns, dots come and go, colours shift. Figure out what each step does, and pick the sixth tile.

Difficultyhow many rules
Sequence 1 / 12One rule
?
What comes sixth?
Watch how the arrow, the dots and the colour change from tile to tile. Pick the tile that continues the sequence — click or press 1–4.
Press 1–4 or click a tile
WATCH THE STEPS

Look at the gaps, not the tiles

The trick is to describe what happens between tiles. Here's your current sequence with every step written out.

→ violet
→ amber
→ violet
→ amber
→ violet

The arrow never turns. The dots stay the same. The colour repeats every 2 tiles.

Two rules, two clocks

Hard sequences hide rules that repeat at different speeds — the colour might flip every 2 steps while the dots cycle every 3. Each rule is simple. Together they look random.

Set two rhythms and see how long it takes for the pattern as a whole to repeat.

Rule A · colour flips every 2
Rule B · dots cycle every 3
The whole pattern repeats every 6 steps.

The three wrong answers you'll be offered

Every wrong option is built from a specific mistake. Know them, and you'll recognise the trap before you fall in.

Right
Trap

Almost the right turn

The arrow is one step off. It’s the most common trap — check the angle against the last two tiles, not just the last one.

Right
Trap

The forgotten rule

The turn and dots are right, but the colour rule was missed. When one feature fits, check the others anyway.

Right
Trap

The broken rhythm

Dots were treated as counting up when they actually alternate. Look at the whole run, not just the last step.

INSIDE YOUR BRAIN

Finding the rule is induction

Going from examples to a general rule is called inductive reasoning — one of the core abilities IQ tests measure. Pick a region.

FRONTALPARIETALTEMPORALOCCIPITALCEREBELLUM
1
Based on Gray's Anatomy, fig. 728 (public domain)
1938primary abilities

Louis Thurstone listed induction — finding the rule behind examples — as one of the seven primary mental abilities.

Thurstone, 1938
1973what makes it hard

Kotovsky and Simon found series get harder mainly with how much you must hold in mind at once — the length of the repeating cycle.

Kotovsky & Simon, 1973
SourcesThurstone (1938), Primary Mental AbilitiesKotovsky & Simon (1973), Cognitive PsychologyChristoff et al. (2001), NeuroImage
WHAT THIS GAME TRAINS

Finding the next step

Work out the rule behind a series of shapes or numbers and predict what comes next. It's inductive reasoning in its purest form.

corestrongsomelight
coreInductive reasoningInferring a rule from examples.
corePattern recognitionSpotting what changes between steps.
strongWorking memoryHolding the series while you test ideas.
someMental flexibilityDropping a rule that doesn't fit.
BEYOND THE SCREEN

Where it matters most day to day

MOST COMMONSpotting trendsSeeing where numbers or results are heading.
Patterns in music and codeRecognising repeats and structure.
Puzzles and quizzes'What comes next?' questions in tests and games.

More pattern games

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Pattern finding is at the core of IQ
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