Joshua Chao's Chess on the Dot on Game Courier

Chess on the Dot is an adaptation of Chess to a spherical board in which the files meet at the poles, and pieces are capable of both transpolar and circumpolar moves. This is perhaps the most straightforward adaptation of Chess to a spherical board, and the only thing distinctive about it is that the design decisions behind it make more sense than those for some very similar games. It is almost identical to Yapsan's Spherical Chess but doesn't permit stationary moves. It is almost identical to the commercially sold version of Global Chess but allows castling either way with either Rook. It's the same as Nadvorney's Spherical Chess except when it comes to how diagonal moves work. In this game, diagonal moves remain colorbound.

This preset enforces the rules, displays legal moves, and spots winning and draw conditions. To make the visualization of transpolar moves easier, it can be played on a display of two hemispheres. You can rotate them by choosing the files they meet at. They can be seen side-by-side in a landscape display or one-over-the-other in a portrait display. Desktops will default to the landscape display while mobile devices will usually use the portrait display, but you can set it to what you want. This game can also be played on a regular Chess board, which can make other moves easier to visualize. You can switch which type of board you're viewing the game on by changing themes.

Click the image for the preset: