Sudoku Let’s Try

A note from the maker

Why I made
another Sudoku app.

I made Sudoku Let’s Try because I couldn’t find a Sudoku app that worked the way I wanted.

I wanted to tackle the hardest puzzles without having to master every named solving technique—and without hints quietly giving away the answer.

I wanted to fill cells and change notes naturally on the touchscreen, without constantly switching input modes. And when a hard puzzle took time to solve, I wanted to start on my phone and pick it up later on my iPad, with my work and undo history intact.

So I built an app around those needs.

Here’s what it lets you do
A puzzle, a few tools,
and room to think.
Made for touch.Room to experiment.Your own way through.

01 / Less between you and the puzzle

Touch controls.
No mode switching.

Fill a cell. Toggle a note. Clear a value. Do it right on the grid, without switching between a note mode and a fill mode.

Most actions happen where you’re already looking. You can keep your attention on the puzzle instead of moving back and forth to a toolbar.

Toggle notes and fill cells

Real App gestures, without switching input modes.
Toggle a note, hold to fill, or double-tap a cell with one note.

02 / Follow a possibility

Try a choice
on a copied board.

Try a choice on a copy of the board. If it leads to a contradiction, discard the copy and cross out that choice on your original board.

You can also explore different choices on two boards, then use their consensus to eliminate notes—even before you know which choice is right.

You can tackle hard puzzles without mastering every solving technique.

Watch overlay · Watch consensus

Try both choices on copied boards

Real App gestures on an X-wing example.
An intuitive way to work through an X-wing.

Keep your train of thought

Undo a move.
Redo your reasoning.

Step back when a move doesn’t work out, or double-tap Undo to return to the last dilemma. Double-tap Redo to move to the next dilemma—or the end of your redo history.

Double-tap Undo and Redo

The same demonstration used in the app.
Return to a dilemma, then follow your steps forward again.

03 / Help that follows your thinking

Hints and warnings.
Based on your input.

Hints and warnings work from your fills and notes. They help you understand the position you’ve created, without consulting the answer.

Show enforced moves

The same demonstration used in the app.
Definite — there’s an enforced move to look at.

Understand a crowded cell

The same demonstration used in the app.
Invalid — inspect where your fills and notes conflict.

Show the tightest sets in Dilemma

The same demonstration used in the app.
Dilemma — look at the tightest sets and decide what to try.

And when it’s a Dilemma? Look at the tightest constraint sets, follow a possibility, and see where it leads.

04 / Take the scenic route

Solve your way through
beautiful scenes.

Journey takes you through beautiful scenes, with challenges along the way. It gives you somewhere to go, as well as something to solve.

Open a Journey puzzle

Recorded from the app. Read-only demonstration.
From a scene to the puzzle you’re solving.

A little help, on your terms

Element assistants,
when you want them.

Fire, Ice and Lightning help fill enforced moves based on your own fills and notes, without consulting the answer. Use them when you’d like to save time on a demanding puzzle—or keep working it out yourself.

Use Lightning

The same demonstration used in the app.
An element assistant in action, on the real puzzle board.

05 / Pick your next puzzle

Find your kind
of challenge.

Start with an easier puzzle, or take on something harder. Browse thousands of puzzles across different difficulty levels and find one that suits you.

On iPad, keep the puzzle list beside your board. Your open puzzles stay within reach when you feel like a change.

Start on your phone. Continue on your iPad.

Sync your progress between devices, including your undo and redo history. Pick up the same puzzle without losing the steps that got you there.

Browse your puzzles

Recorded from the app. Read-only demonstration.
Browse, filter and sort. On iPad, your puzzle stays alongside.

06 / Bring a puzzle. Send a challenge.

Create a puzzle.
Share a challenge.

Create a puzzle of your own, or import one you found elsewhere. Send a puzzle to a friend with a message—perhaps just, “This puzzle is really hard!”

Bring a puzzle into the editor

Recorded from the app. Read-only demonstration.
Paste its digits, then work with it in the editor.

A puzzle and a message

Recorded from the app. Read-only demonstration.
Add your own message before sharing.

Sudoku Let’s Try

These are the tools I wanted.
I hope you’ll enjoy them, too.

Take your time. Try an idea. Find your own way through.

Tell me what you think ↗

Li Zhang