Sudoku Puzzle

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Weekly Performance Display
for user on task
All time best single score/min =
All time best single score/move =
Note: Dates are end-of-week (Saturday)

Grand total time in task =
Creating graph
Graph: Ave Score per Minute for Week


Sudoku is a pure logic puzzle that uses the numerals 1,...,9 as markers, but involves no math or arithmetic. It was invented in the 1970's in Michigan, but took off first in Japan, later returning to the US and the UK. The Sudoku grid is 9x9, and a given puzzle has some of the squares already filled in. The goal is to fill in the blank squares in such a way that each numeral occurs just once in every row and column, and in every subsidiary 3x3 grid marked with heavy lines. As in all the other Strong Brain tasks, pushing yourself for speed takes increased concentration which builds mental muscle.


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