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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
16 3
17 5
18 516
19 456
20 8739
21 2930
22 23271
23 3274
24 14134
25 1281
26 4306
27 361
28 987
29 80
30 138

Sum 60481
 
31 10
32 4
34 1

Sum 15

Distribution of type

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

TypeCount
Symmetrical Sudoku60496