Joost Schreuders
Part no.
JS-26-04
Maker
Joost Schreuders
Document
4-op-een-rij datasheet
Revision
2026-03

4-op-een-rij

Connect Four for two players, in Dutch. Built for a school assignment and installable like a native app.

Play itView the code
The 4-op-een-rij board, an empty grid with a score panel and keyboard hints, all in Dutch.
Figure 1. The 4-op-een-rij board, an empty grid with a score panel and keyboard hints, all in Dutch.

Features

  • Two players take turns, red starts
  • Undo the last move
  • Keeps score across games
  • Play with mouse, touch, or arrow keys and Enter
  • Install it to your home screen or desktop
Table 1. Specifications
TypeProgressive web app
Built withJavaScript, Service worker, and Web app manifest
Last updatedMarch 2026
Sourcegithub.com/JooostS/connect-4
Figure 2. Running live

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