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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 4
17 7
18 197
19 118
20 1496
21 616
22 3813
23 1003
24 3717
25 793
26 2485
27 612
28 1850
29 451
30 871

Sum 18033
 
31 133
32 155
33 12
34 12

Sum 312

Distribution of type

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

TypeCount
Symmetrical Sudoku18345