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The “house” shape is a classic because it teaches odd vertices fast.
Can it be drawn in one stroke? Usually yes, for the standard house with a square base and roof line.
Where should you start? Start on one odd vertex and finish on the other. In many house puzzles those are the bottom corners.
Common mistake: Forgetting to count the roof junctions separately from the outer corners.
Infinite puzzles. Adaptive difficulty. No forced ads.