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
10		15
11		100
12		572
13		801
14		2638
15		868
16		5159
17		740
18		4391
19		397
20		1635
21		86
22		301
23		12
24		16
25		1
26		3
Sum		17735

Distribution of type

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

Type	Count
Symmetrical Sudoku	15185
Optimal Sudoku	2550