---
title: "Two-String Kite: Sudoku Technique #21 | Sudoku Flow"
description: "Two-String Kite: When two strong links on one number, one in a row and one in a column, have near ends that share a box, at least one far end must hold it…"
url: https://sudokuflow.com/lessons/twoStringKite/
language: en
---

[Sudoku technique lessons](https://sudokuflow.com/lessons/) / Two-String Kite

Lesson 21

# Two-String Kite

## The rule

When two strong links on one number, one in a row and one in a column, have near ends that share a box, at least one far end must hold it, and any cell seeing both far ends loses that candidate.

## Step by step

1. For 6, a row and a column each have that candidate in only two cells (a strong link). One cell from the row and one from the column (the near ends) share a box, and the other two are the far ends, forming a Two-String Kite!
2. 6 must be in at least one of the two far ends, so we can remove the candidate 6 from any other cell that sees both far ends.

[Read the full lesson, with more examples →](https://sudoku.rubigogames.com/techniques/two-string-kite.html)

In our app, when this technique is the next step, the hint names it and shows you why, step by step. No ads, free to download.

[App Store iPhone, iPad, Mac](https://apps.apple.com/app/apple-store/id6502922368?pt=125379530&ct=sudokuflow_cta&mt=8) [Google Play Android](https://play.google.com/store/apps/details?id=com.rubigogames.sudoku&referrer=utm_source%3Dsudokuflow%26utm_medium%3Dcta%26utm_campaign%3Dlesson)

## Try it on more boards

Each board is a real puzzle from our app, at a moment where Two-String Kite applies. Find the step yourself, or tap Hint and the app's own hint walks you through it.

Two-String Kite practice board:

```text
4  .  .  | .  .  1  | 3* .  .
5  8  3  | .  4  7* | 2* .  1*
.  .  .  | .  3  .  | 4  .  .
---------+----------+---------
2* 4* 8  | 5  7* 3* | 9* 1  6
3* 5* .  | .  .  2  | 8* 7* 4*
9  7  .  | .  .  4* | 5  2  3
---------+----------+---------
8* 9* .  | .  2  6  | 1* 3  5*
6  .  .  | .  .  .  | 7  .  .
.  .  5  | .  .  8  | 6* 4  .
```
Digits marked * were filled in by a player; the others were printed with the puzzle.

![Sudoku app icon](https://sudokuflow.com/assets/app-icon.png)

## Want more boards like this?

We also make a Sudoku app for iPhone, iPad, Mac and Android. There are no ads in it at all, it works offline, and when you ask for a hint it shows you the technique instead of just filling in a number.

[App Store iPhone, iPad, Mac](https://apps.apple.com/app/apple-store/id6502922368?pt=125379530&ct=sudokuflow_web&mt=8) [Google Play Android](https://play.google.com/store/apps/details?id=com.rubigogames.sudoku&referrer=utm_source%3Dsudokuflow%26utm_medium%3Dweb%26utm_campaign%3Dsite)

Sudoku Flow is made by Rubigo Games, the developer of the Sudoku app recommended on this site.