Rainstorm Sudoku
Use the clues about the shaded areas to help solve this sudoku
Age
14 to 16
Challenge level
Problem
Invented by Henry Kwok
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Rules of Rainstorm Sudoku
The variant is given such a name because of the many diagonal colour regions slanting in one direction, like heavy rainfall.
As in a standard Sudoku, the object of the puzzle is to fill in the whole 9x9 grid with numbers 1 through 9 so that each row, each column, and each of the nine 3x3 boxes must contain all the nine different numbers 1 through 9.
In addition, each diagonal colour region must be filled with the same number. Note that regions in the same colour on different parts of the grid do not necessarily contain the same number as each other.
Student Solutions
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