Trainers

Forward planning

Skyline

The tower-rearrangement planning puzzle: recreate a target skyline by moving one floor at a time, scored against a mathematically-verified minimum move count. There is no clock: pausing to plan before your first move is the skill being measured, and moving too fast is exactly what the scoring penalises. A staple of trading-firm cognitive assessments.

Settings

Save
Mode
Capped

Ten towers-and-floors puzzles with unlimited stack heights. Solve each in as few moves as you can. The minimum is always shown.

Upgrade to unlock Capped mode.

Session

10 levels with a known minimum from 2 up to 7 moves, and no clock anywhere: planning before the first move is the skill being measured, so take your time.

Performance

This mode
most perfect solves
attempts

Track your best scores and watch your accuracy climb across every session.

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Frequently asked questions