DWG-102.2.08
Killer Sudoku #8 · Medium
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About this puzzle
Sheet #8 divides the grid into 25 cages averaging 3.2 cells. No cage has just one possible set of digits, so the first footholds come from the rule of 45 and from the places where cages meet.
The largest cage covers 5 cells and adds up to 29; it starts at row 5, column 2.
The most open cage, 26 in 5 cells, still allows 11 different sets of digits — leave it for later.
Where to start
At least once you will need the rule of 45: total a row, column or box and subtract the cages that lie inside it.