Check out Chess with Different Armies, our featured variant for July, 2024.

This page is written by the game's inventor, Robert Price.

Platform Chess

By Robert Price


I'm hoping to make a Zillions implementation of Star Trek Tridimensional Chess. That game features movable 2x2 attack platforms that the current owner can place to best advantage (but only if occupied by a pawn or less). I was curious whether or not it was actually possible to implement a mobile platform in Zillions, so I made a 2D variant using them. The game turned out to be rather interesting in its own right.

The Void

The board is an 8x8 checkered square, hereafter referred to as the Void. No pieces may ever stand on the Void. Rooks, Queens, and Bishops may not cross the void. Instead, pieces are required to stand on and move over any of twelve 2x2 platforms that roam the Void.

The Platforms

Each player starts the game with control of six platforms, four of them full. Ownership of these platforms will not change through the course of the game.

The turn

During your turn, you may take one of two actions:

The setup

The Chess pieces are set up as in Chess. Each player controls four platforms that hold his initial army, and two empty ones forward and to the side. The 4x4 central region begins devoid of platforms.


In 8-Platform Chess, the empty platforms in the starting setup are omitted. Each player starts with just enough platforms to hold his army.


The aforementioned Zillions implementation is available here. Zillions v1.3.1p or later is required!

Sample game

A sample game with running commentary by the author can be found below:

Robert Price (email removed contact us for address)
Written by Robert Price.
WWW page created: October 27th, 2001.