Reddit-style help example
Next logical step: Hidden Single places 2 in row 2
This page is prepared as a visual detail link for a Sudoku help reply. It explains one next logical move rather than dumping the full solution.
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Visual example
Next logical step: Hidden Single places 2 in row 2
Scan row 2 first. The visible candidates show that only r2c8 can still contain 2.
How to read this visual
Scan row 2 first. The visible candidates show that only r2c8 can still contain 2.
- 1 Find the pattern A hidden single is not necessarily the cell with one note. Here r2c8 has several candidates, but it is the only cell in row 2 where candidate 2 appears.
- 2 Use the restriction Because every row must contain one 2, and every other empty cell in row 2 rules out 2, r2c8 must be 2.
- 3 Keep practicing When no cell has a single candidate, pick one row, column, or box and ask where each digit can still go. A digit with exactly one possible position is a hidden single.
Result: Place 2 in r2c8.
Next logical step
Hidden Single
Place 2 in r2c8.
Why this works
- Focus: Scan row 2 first. The visible candidates show that only r2c8 can still contain 2.
- Pattern: A hidden single is not necessarily the cell with one note. Here r2c8 has several candidates, but it is the only cell in row 2 where candidate 2 appears.
- Elimination: Because every row must contain one 2, and every other empty cell in row 2 rules out 2, r2c8 must be 2.
- Practice: When no cell has a single candidate, pick one row, column, or box and ask where each digit can still go. A digit with exactly one possible position is a hidden single.
Continue learning
Want hints like this while solving? Sudoku Coach teaches the technique behind each next move instead of only revealing the answer.
Learn the underlying method in the Hidden Single guide.
App import is intentionally not part of this V1. This page is site-only; future versions can add Universal Link puzzle import.
Reddit reply draft for human review
Use only after checking subreddit rules and confirming the visual explanation matches the posted screenshot. The reply includes a useful answer before the link and discloses affiliation.
Scan row 2 for where digit 2 can go. The other empty cells in the row rule out 2, but r2c8 still has it as a candidate, so r2c8 is a hidden single: place 2 there. I made a visual explanation here: https://sudoku.franklab.us/reddit-puzzles/demo-hidden-single-row-2/ Disclosure: I am affiliated with Sudoku Coach; the page is meant to explain the logic visually.