Reflex

Signal Sweep

Scan the board and select every symbol that matches the current visual rule.

Mode Solo Session 45–90 sec

Play Signal Sweep

Round— / 15
Time—
Score0

Current rule

Look for every symbol that matches the round's rule.

Visual search · 15 rounds

Scan. Match. Clear.

Read a short rule, then find every matching symbol before time runs out.

How to Play

Read the rule, then tap every matching symbol before time runs out. Correct picks stay selected; wrong picks cost points but do not end the round. Clear all 15 rounds to finish.

Controls

Tap or click each matching tile. Keyboard: Tab to a tile, then press Enter or Space.

Scoring

Each correct tile: +100. CLEAR bonus: +200, multiplied by the clean streak at round start (×1.00 at streak 0–1, ×1.10 at 2–3, ×1.20 at 4–5, ×1.30 at 6+), plus floor(time left in 100ms units) ×2 (maximum +160). Wrong tile: −50; score never drops below 0. TIMEOUT adds no extra penalty. The streak multiplier affects only a CLEAR bonus.

A closer look at Signal Sweep

Translate the rule into a short scan

Check only the attributes named by the displayed rule: shape, fill, mark, and color family. For an AND rule, every clause must match; for an OR rule, either complete branch can match. Keep shape and fill in view even when a tile’s color is visually prominent.

An AND rule requires both properties

If a round asks for a triangle that is striped, a striped triangle matches; a solid triangle does not, even though its shape is right. Each correct selection adds 100 points, while a wrong selection removes 50, so checking both named attributes is worth the extra glance.

The board is a rule-reading task, not a color-only test

Symbols combine shape, fill, mark, and color family, while generated rules can join conditions with AND or offer alternative branches with OR. Reading the rule and then scanning the relevant symbol features is the core action; color alone never defines every match.

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