# Chladni — Grid patterns Puzzle | Mathallery

Source: https://mathallery.com/games/chladni/

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# Chladni

Grid patterns · 30 levels

Bow a brass plate until the sand draws the figure.

## How to play

- Set the plate's two numbers m and n and the ± switch, then tap Bow. The plate sings and the sand dances.
- Sand gathers on the lines that stay still. Bigger m and n give more lines and a higher note (the note grows with m² + n²).
- Make the sand figure in the frame. Swapping m and n draws the same figure.

With ＋, m = n gives a plain grid of m lines each way. Count the lines along the edges of the target. Later part of the target is covered, and you only get a few bows.

[Open Chladni](https://mathallery.com/#/play/chladni/1)

Teeter, Tint and Echo Heist are free starters. Other games unlock through earned game choices or permanent packs. Your progress stays in the browser; optional sign-in saves it to your website account.