Antipode Chess

Antipode Chess is chess played on a closed world. Two 8x8 faces - 128 squares - wrap into a single "square globe". Columns run in a continuous loop, so column 16 connects straight back to column 1. Ranks A and H are poles: cross one and you arrive on the far side of the world, eight columns away, heading back the other direction. Everything you know about chess still applies. Everything you know about the edge of the board does not. WHAT CHANGES - Rooks can attack the same square from two directions at once - over the pole, and the long way around the world. - Bishops stay locked to their square color across the entire globe, including pole crossings. - Pawns have no "forward". They step one square in any orthogonal direction and capture diagonally in any direction. - A pawn promotes when it reaches the antipode of its own starting square - the point directly opposite through the center of the world. - Corners behave strangely: cross a pole exactly at a face corner and both of your directions flip. - There are no edges to hide behind. A king is never safe just because it reached the side of the board. LEARN IT IN TWO MINUTES "Learn the globe" walks you through six real moves on a real board - the loop, the pole crossing, omnidirectional pawns, the color-bound bishop, the corner bounce, and the two-front attack that gives the game its name. Every move draws its actual route, so you can always see how a piece got where it went. A second track, "Winning strategies", teaches what actually decides games - drawn from over a thousand test games played by the engine. PLAY - Two players on one device, seated across from each other - each face is drawn from that player's own side of the table. - Or play the computer at Easy, Normal, or Hard. - Online turn-based games through Game Center - play a move, close the app, get notified when it is your turn. - Chess clocks at 3, 5, or 15 minutes, or untimed for learning. - Full move history in readable notation, undo, and a rules reference you can open mid-game. - An Elo rating that moves toward the strength you actually beat, and two Game Center leaderboards. FREE, AND WHAT IS NOT The tutorials, two-player games on one device, and the Easy and Normal computer opponents are free and always will be. One optional purchase unlocks the Hard opponent, online play and rated leaderboards. No ads. No subscription. No account to create - online play and leaderboards use the Game Center account already on your device, and are entirely optional. Everything else, including the computer opponent, runs on your device. Checkmate wins. Stalemate draws. No castling and no en passant - just the pieces, and a board that never ends.