Daily sudoku
Pick a level anywhere else in this wing and you have chosen your own difficulty. Here the date chooses, and the grid it picks is the same one every other player gets today.
Hi! I am Ollie. Welcome to Sudoku Springs!
Today's grid is the same one everybody else is solving today. Open the Daily tile and see how cleanly you can finish it. Have fun!
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nine pools Fill every row, column and box with 1-9. The Nine Pools board of Sudoku Springs is graded easy, and a level of the trail takes four to six cleared boards.
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steam bridge Fill every row, column and box with 1-9. The Steam Bridge board of Sudoku Springs is graded easy, and a level of the trail takes four to six cleared boards.
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stone sundial Fill every row, column and box with 1-9. The Stone Sundial board of Sudoku Springs is graded medium, and a level of the trail takes four to six cleared boards.
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terrace steps Fill every row, column and box with 1-9. The Terrace Steps board of Sudoku Springs is graded medium, and a level of the trail takes four to six cleared boards.
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mineral falls Fill every row, column and box with 1-9. The Mineral Falls board of Sudoku Springs is graded medium, and a level of the trail takes four to six cleared boards.
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chalk arch Fill every row, column and box with 1-9. The Chalk Arch board of Sudoku Springs is graded hard, and a level of the trail takes four to six cleared boards.
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sun terrace Fill every row, column and box with 1-9. The Sun Terrace board of Sudoku Springs is graded hard, and a level of the trail takes four to six cleared boards.
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pebble mosaic Fill every row, column and box with 1-9. The Pebble Mosaic board of Sudoku Springs is graded hard, and a level of the trail takes four to six cleared boards.
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mountain gate Fill every row, column and box with 1-9. The Mountain Gate board of Sudoku Springs is graded expert, and a level of the trail takes four to six cleared boards.
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golden spring Fill every row, column and box with 1-9. The Golden Spring board of Sudoku Springs is graded expert, and a level of the trail takes four to six cleared boards.
The same grid for everyone
Today's board is generated from today's date. That is the whole mechanism: our generator is deterministic, so two strangers asking on the same day get the same puzzle without any account, any server or any waiting. The difficulty is the date's rather than yours, and the week climbs the way a newspaper's does, gentle at the start and hardest at the weekend.
The leaderboard ranks how cleanly you solved it
Not how fast. Every sudoku leaderboard in existence is a stopwatch, and a stopwatch turns thinking into a cost — which is exactly wrong for a puzzle whose whole pleasure is taking your time over it. A clean solve is worth a thousand. Each visible mistake costs a hundred, each step of a hint costs fifty, and both are choices you can see yourself making. Sit and stare for an hour and it costs you nothing.
Which level each day of the week lands on
The curve is not a mood. It is a seven slot array the generator reads by weekday, holding the same seven values for a player's first grid and their five hundredth, so the day of the week decides the level completely before anyone opens anything.
| Day | Level | What it asks for |
|---|---|---|
| Sunday | Expert | Goes past the standard techniques. Take your time. |
| Monday | Easy | Scan the boxes. No pencil marks needed. |
| Tuesday | Easy | Scan the boxes. No pencil marks needed. |
| Wednesday | Medium | Pencil marks start to pay off. |
| Thursday | Medium | Pencil marks start to pay off. |
| Friday | Hard | Needs a pair or a locked digit. |
| Saturday | Hard | Needs a pair or a locked digit. |
Knowing which technique a grid turns on before you ask for help is the cheapest way to protect a daily score: each of the six has a page with a worked example under sudoku techniques, and how to play covers the rules and the hint ladder if the vocabulary is new. Tomorrow the date picks again, and four mornings in seven it picks a different level as well.