Nudge
Find the next move
Ask for a nudge and Coach will look for a logical next step using the current grid and candidate notes.
Sudoku Coach online
Step-by-Step Sudoku Hints
Get a logical nudge when you are stuck. SudoSketch Sudoku Coach explains the next human-style move, highlights the important cells and helps you learn techniques without instantly spoiling the puzzle.
Sudoku help that teaches, not cheats
Most Sudoku solvers jump straight to the answer. That is useful when you want to check a puzzle, but it does not help much when you are trying to improve. SudoSketch Sudoku Coach is built around the next logical step.
Instead of dumping the solution, Coach looks at the current board and suggests a human-style move. It can highlight the cells involved, show which candidates matter and walk through the reasoning one step at a time.
It is designed for proper Sudoku learning: enough help to move forward, not so much help that the puzzle turns into number-admin with delusions of grandeur.
What Sudoku Coach can help with
Explain
Step-by-step logic
Follow the explanation one stage at a time, with board highlights showing what to look at and why.
Improve
Learn real techniques
Build confidence with Sudoku techniques from basic singles through to wings, fish, chains and advanced candidate logic.
Human-style Sudoku techniques
SudoSketch Coach models a wide range of recognised Sudoku solving techniques, including Naked Singles, Hidden Singles, Pointing Pairs, Box-Line Reduction, Naked Pairs, Hidden Pairs, X-Wing, Swordfish, XY-Wing, XYZ-Wing, W-Wing, Skyscraper, Two-String Kite, Empty Rectangle, Simple Colouring, Remote Pair, Turbot Fish, X-Chains and XY-Chains.
The aim is not just to say “put a 7 here”. The aim is to explain why a 7 belongs there, or why a candidate can be removed, in a way that a human solver can actually follow.
That makes Coach useful whether you are learning Sudoku properly for the first time or trying to understand harder logic without disappearing into forum diagrams that look like railway signalling plans.
Popular Sudoku techniques
Basics
Singles and candidates
Learn Naked Singles, Hidden Singles and candidate checking: the foundation of clean Sudoku solving.
Patterns
Pairs, triples and fish
Understand locked candidates, subsets, X-Wing and Swordfish patterns with clearer visual guidance.
Advanced
Wings and chains
Explore XY-Wing, XYZ-Wing, W-Wing, Skyscraper, Two-String Kite, Simple Colouring and chain-based logic.
Candidate checking and cleaner solving
Harder Sudoku puzzles often depend on candidate notes. If the candidate map is wrong, the logic falls apart quickly. Coach can help check candidates and show when notes are missing or incorrectly left in place.
This makes the Coach useful as both a Sudoku hint tool and a learning tool. You can play normally, ask for help when stuck, then use the explanation to understand the move rather than simply memorising an answer.
It is the difference between “here is the solution” and “here is how you could have spotted it yourself”. Subtle, but quite important unless you enjoy being bullied by a spreadsheet with squares.
Try Sudoku Coach now
Stuck on a puzzle? Get a proper logical nudge instead of surrendering to brute force and calling it “intuition”.
Sudoku Coach FAQ
What does Sudoku Coach do?
It looks at your current Sudoku board and suggests a logical next move, with step-by-step explanation and visual highlights.
Does it reveal the full solution?
No. The Coach is designed around nudges and explanations rather than instantly spoiling the whole puzzle.
Can it explain advanced Sudoku techniques?
Yes. Coach supports techniques including X-Wing, Swordfish, XY-Wing, XYZ-Wing, W-Wing, Skyscraper, Two-String Kite, Simple Colouring and chain-based logic.
Is Sudoku Coach free?
Yes. SudoSketch Sudoku Coach is free to use online.
Can I still use the normal Sudoku solver?
Yes. Use Sudoku Coach when you want to learn the next step, or use the Sudoku Solver when you want a more direct solve/checking tool.