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EF Battery · Test 05

Tower

A digital Tower of Hanoi prototype. Five puzzles of increasing size measure planning, working memory, and inhibition. Pointer movement is sampled during each drag alongside first-move latency, excess moves past the shortest path, and rule violations.

Five puzzles

Move the discs to the right peg

Each puzzle starts with a stack of discs on the left peg. Your goal is to rebuild the same stack on the right peg.

Two rules. Move one disc at a time, always the top disc of a peg. Never place a larger disc on a smaller one.

Drag discs with your mouse or finger. Illegal drops flash red and return. Try to use the fewest moves you can.

Disc counts: 3, 4, 5, 6, 7

Research prototype. Not a diagnostic device. Stimuli are original and not copied from any copyrighted test. Participant kinematics are stored only in browser memory and included in the downloadable JSON for offline analysis; no data leaves this device unless you export it.