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There are champions... and then there is the all-conquering Sarah Mills.
The mum-of-two from Taverham near Norwich is a multiple British champion - in the competitive world of jigsaw puzzling.
Fun fact: those who do jigsaws are known as dissectologists - and Sarah has dominated domestic dissectology for the last seven years.
"I've always done them since I was little... I just didn't stop," she said.
Dissectologists are people who enjoy doing jigsaws. The name is apparently derived from early puzzles which were made from printed maps - known as dissected maps
"My dad heard about the competition in its first year and he told me I should apply so I did. And I won. And I've been winning it each year since.
"I went along to give it a try. I wasn't expecting to win and I never expect to win each year since. I always think there's going to be someone there who'll beat me."
Her training is squeezed in around her day job as an insurance underwriter for Aviva.
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Sarah attributes her success to her love of art and numbers.
"I think there's part of my mathematical, logical brain that I use for work," she said.
"But then I also like art so it's combining the two - the pictures and the patterns. I'm putting colour together. Getting the same colours out and putting them together and finding patterns."
In terms of domestic title-winning legends, Sarah is in some refined company. In terms of all-conquering UK title winners she still has some way to go to overtake darts legend Phil "The Power" Taylor who took 16 World Darts titles.
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But she is close to Scottish football giants Celtic and Rangers who have both won nine titles in a row - Celtic have achieved it twice. And she matches Sir Lewis Hamilton and Stephen Hendry for the most titles accrued.
The Covid lockdowns have prompted a puzzling boom, which might mean Sarah faces tougher competition next year.
For those who fancy a crack at the jigsaw crown, Sarah has some advice: do not start with the corners or edges.
"Definitely not. I'm not a fan of the edges. I leave those until the end when I have to," she said.
Instead, she favours focusing on the most-eyecatching element of the puzzle, and working out from there.
Unusual advice, but it clearly works - and Sarah has the titles to prove it.