Over and under
Follow a cable through crossings, then read the depth order of overlapping sticks.
Example
Example
Example · Standard
Which stick can you lift first without moving another?
Text description
- A passes over B.
- A passes over C.
- D passes over A.
- B passes over C.
- D passes over B.
- D passes over C.
Stick D has no stick above it.
Choose the only stick with nothing above it.
6 questions · No time limit
- Questions answered
- 0 / 6
- Active time
- 0:00
Ready to start?
Follow the crossings carefully, then choose your answer.
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Reload pageOn by default unless you turn it off. Saved choices are kept. Shares starts, completions, replays and error categories. For ChatGPT visits, starts and completions may include the first QuickenBrain page and country. No answers, drawings or names.
How this data is usedHelp
A gap shows where one strand passes under another. At a crossing, keep following the same cable rather than turning onto its neighbour. A stick can be lifted only when no remaining stick crosses over it. The pictures can be turned or reflected; the crossing rule stays the same.
Each round has six questions and no time limit. Choosing an answer locks it. Review the steps, then move to the next question. Finish all six to save the round. Active time includes reviewing the steps, but does not count time when this page is hidden. Speed does not affect your score.
Use Tab and Enter or Space to choose an answer. The number keys also select answers, except when another control is focused. After an answer, Enter goes to the next question.
Original practice puzzles, not a standardized assessment.
About this practice
Follow a cable through crossings, then read the depth order of overlapping sticks.
Report a problem
On by default unless you turn it off. Saved choices are kept. Shares starts, completions, replays and error categories. For ChatGPT visits, starts and completions may include the first QuickenBrain page and country. No answers, drawings or names.
How this data is used