description Shakashaka Overview
Shakashaka is a logic puzzle published by Nikoli in which solvers place right-angled triangles in white grid cells. Each triangle occupies half of its cell and points in one of four orientations. The remaining unshaded white areas must each form a rectangle, and numbered clues indicate how many triangles surround that cell. It appeals to fans of spatial and geometric deduction puzzles.
insights Ranking position
Shakashaka ranks #37 of 93 in the Logic Puzzle ranking, behind Irregular Sudoku, ahead of Ripple Effect.
help Shakashaka FAQ
How do you play Shakashaka?
Shakashaka is a logic puzzle published by Nikoli where solvers fill white grid cells with right-angled triangles. Each triangle takes up exactly half of a square cell and can point in one of four directions. The ultimate goal is to ensure all remaining unshaded white areas form perfect rectangles.
What do the numbers mean in a Shakashaka puzzle?
Numbers in the grid provide clues about how many sides of a triangle are touching that specific cell. A zero means no triangle sides can touch that cell, while a four means it must be surrounded by triangles pointing into it. Solvers use these numbered clues to deduce the correct placement of the triangles.
What is the goal of solving a Shakashaka puzzle?
The main objective is to place the triangles so that every remaining white space forms a perfect rectangle. You must use the numbered clues to determine the orientation of the triangles in the cells. Once solved, the black triangles border the edges of all the white rectangular regions.
Who created or published the Shakashaka puzzle?
Shakashaka is a Japanese logic puzzle published by the renowned puzzle company Nikoli. Nikoli is famous for popularizing other grid-based puzzles like Sudoku. The puzzle relies entirely on logical deduction rather than math or guesswork.
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