How do I play Shape Count Deluxe?

A figure made of straight lines is drawn. Count every triangle you can trace along the drawn lines · small cells, overlapping middles, and the big outlines · then tap the number you believe is right.

Are the answers really correct?

Yes, provably. The answer is computed by exhaustively checking every triple of intersection points in the figure with exact integer arithmetic · never counted by hand and never taken from a formula. The reveal shows every counted triangle, one by one.

What counts as a triangle?

Any three corner points of the figure that are not on one line, where all three connecting sides run entirely along drawn lines. Triangles of every size count, including ones that overlap or contain each other.

Why do I keep missing triangles?

Most people count only the smallest cells and forget the composed ones · two cells that merge into a bigger triangle, or the outer outline itself. Counting systematically by size is the skill the game trains.

What does Shape Count Deluxe train?

Systematic visual decomposition · breaking a cluttered figure into parts, scanning them in an order, and not trusting your first glance. The countdown at high difficulty adds speed pressure on top.

Shape Count Deluxe · חידות משולשים מוכחות · עברית

How many triangles hide in the figure? Every answer is proven by exhaustive enumeration · the reveal lights up each counted triangle

Count the triangles hidden in the drawn figure and pick the right number. JavaScript required.

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