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Distribution of start numbers

This table shows the spread of puzzles mapped to the numbers a puzzle start with. Clicking on the number will give you a random puzzle with that start number count. I've put a sum-line at 30 since some people think a real sudoku should have less than or equal to 30 start numbers.

Starting numbers puzzles in db
8 24
9 5
10 172
11 21
12 308
13 34
14 221
15 27
16 95
17 6
18 19
19 3
20 1

Sum 936

Distribution of type

This table show how many puzzles there are to each puzzle-type

TypeCount
Symmetrical Sudoku936