Sudoku puzzles

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
18		10
19		1609
20		6270
21		3346
22		24407
23		120190
24		263965
25		242341
26		472413
27		213385
28		1292701
29		316110
30		1368972
Sum		4325719
31		189145
32		1332244
33		123532
34		420983
35		28413
36		368338
37		11303
38		39013
39		1086
40		61678
41		353
42		814
43		6
44		3623
45		2
46		6
48		48
Sum		2580587

Distribution of type

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

Type	Count
Optimal Sudoku	700968
Symmetrical Sudoku	3367563
Slider Symmetrical Sudoku	2837756
Slider Symmetrical equal Sudoku	19