# Which is the hardest Sudoku?

## Which is the hardest Sudoku?

AI Escargot

For those of us that never tire of a well made sudoku challenge, Finnish mathematician, Arto Inkala has made what he claims is the hardest sudoku puzzle ever. According to the Finnish puzzle maker “I called the puzzle AI Escargot, because it looks like a snail. Solving it is like an intellectual culinary pleasure.

## How long should it take to solve a hard Sudoku?

If you asked me to estimate how long it takes me to solve a hard sudoku, I’d say about 10 minutes, even if this is lower than my average. Most of the time, I solve in under 10. The particular puzzle you ask me to solve might be an outlier, in one direction or the other, I wouldn’t know.

**What is extreme Sudoku?**

The goal of these extreme numbers sudoku puzzles is to fill each nine-square row, each nine-square column and each nine-square box with the letters 1 through 9, with each number used once and only once in each section.

### Does Sudoku make you smarter?

Brain training games do not make you smarter, according to scientists. Practising a game like sudoku or using a brain training app might make you better at it but it won’t boost your IQ or general brain power, a study claims.

### Does Sudoku train your brain?

Taking a stab at Sudoku is another working-memory training activity. It’s like chess — while you’re making a move, you have to think three or four steps ahead to your next move. And that’s good exercise for the brain.

**What is a swordfish in Sudoku?**

A Swordfish is a 3 by 3 nine-cell pattern where a candidate is found on three different rows (or three columns) and they line up in the opposite direction. Eventually we will fix three candidates somewhere in those cells which excludes all other candidates in those units.

#### Is Sudoku high IQ?

From this case study it can be concluded that an individual who is skilled at solving Sudoku puzzles likely has a high general IQ. The results of the weak correlation between Sudoku scores and the WAIT test indicates that in some cases a high Sudoku doesn’t necessarily mean a high general IQ.

#### Is Sudoku good for ADHD?

You can try ADHD brain exercises on your own, but there isn’t much evidence that they’re effective this way. Still, it can’t hurt to work on a brain-teaser to pump your mental muscles up. Brain exercises include: sudoku.