How CANDOKU works
Classic Sudoku logic, redesigned as a playful daily puzzle break.
Pick a puzzle
Start with a quick daily challenge or choose your own level.
Read the board
Look across rows, columns, and blocks to spot missing numbers.
Active visual scanning recruits the Intraparietal Sulcus (IPS), building visuospatial working memory as you track numbers across the grid.
Use logic, not luck
Place each number by deduction, pattern recognition, and elimination.
Get help when stuck
Use hints to keep learning without breaking the flow.
As cognitive load shifts, you practice multi-step heuristic reasoning in the Prefrontal Cortex (PFC), sequencing actions and enforcing rules.
Complete your daily win
Finish the puzzle, build your streak, and come back tomorrow.
Evaluating numbers engages error-detection centers, while the ventral striatum provides the dopamine drive that makes solving so satisfying.