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New Zealand Puzzle Association Inc.

organizer of : NZ open/junior/school vaki ® puzzle and sudoku Championship
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Sudoku Ratings

Some puzzlers are better than others at solving sudoku. They can solve more difficult puzzles, faster and with fewer mistakes.

How we calculate ratings

We calculate ratings as the average of the top 20 sudoku scores (over zero) for completed puzzles that you have recorded in the previous six months.

if you have completed fewer than ten puzzles then the total of your scores is divded by twice the number of puzzles you have completed (i.e if you have completed four puzzles the total score is divided by eight)

Sudoku Ratings

We can't calculate your rating. For your rating to be displayed you must have solved one or more sudoku online and you must be logged in

Sudoku ratings are calculated in four age bands
All puzzlers
Veteran Puzzlers (over 60)
Under 18
Under 16
Under 14


The puzzlers with the highest ratings are :

Rank Puzzler Rating Country
1 Della Butts 2977 New Zealand
2 Brena Merz 1205 New Zealand
3 Jacky Chen 1072 New Zealand
4 Eamonn Waters 626 New Zealand
5 Sue Jynn Leong 526 New Zealand
6 Lorna B 434 New Zealand
7 Elizabeth Challies 410 New Zealand
8 Elizabeth Waters 383 New Zealand
9 tobias thompson 318 new zealand
10 Brody Green 260 New Zealand


The veteran (over 60) puzzlers with the highest current ranking scores are :

Rank Puzzler Current Ranking Score Country


The under 18 year old puzzlers with the highest ratings are :

Rank Puzzler Rating Country
1 Brena Merz 1205 New Zealand
2 Jacky Chen 1072 New Zealand
3 Sue Jynn Leong 526 New Zealand
4 tobias thompson 318 new zealand
5 Brody Green 260 New Zealand
6 Joyce S 233 M
7 Kady Tull 203 New Zealand


The under 16 year old puzzlers with the highest ratings are :

Rank Puzzler Rating Country
1 Brena Merz 1205 New Zealand
2 Jacky Chen 1072 New Zealand
3 Sue Jynn Leong 526 New Zealand
4 tobias thompson 318 new zealand
5 Brody Green 260 New Zealand
6 Joyce S 233 M
7 Kady Tull 203 New Zealand
8 bob marley 183 NZ
9 Janet Gu 180 New Zealand


The under 14 year old puzzlers with the highest ratings are :

Rank Puzzler Rating Country
1 Brena Merz 1205 New Zealand
2 Jacky Chen 1072 New Zealand
3 Sue Jynn Leong 526 New Zealand
4 tobias thompson 318 new zealand
5 Brody Green 260 New Zealand
6 Joyce S 233 M
7 Kady Tull 203 New Zealand
8 bob marley 183 NZ
9 Janet Gu 180 New Zealand
10 Alex Ly 118 New Zealand
11 Ben Hopkinson 109 New Zealand