4D Chess: New Dimension

Play familiar Classic 8×8 chess offline, or explore Fourfold: spatial 4D chess across four connected boards in one shared game. Read the same position in flat 2D, a 3D view or a rotating 4D projection. LEARN 4D CHESS BY MAKING A MOVE Start with a simple rook move. Guided lessons and movement labs introduce coordinates, connected spaces and moves beyond a single board. Explore 102 puzzles across five learning levels, including spatial challenges that connect 2D, 3D and 4D views. Practice captures, forks and promotion, and build a daily streak. Free players receive a set of three puzzles: unfinished puzzles stay available, and the next set opens the day after all three are solved. Retries within the current set are free. ONE POSITION. THREE PERSPECTIVES. Zoom in on one flat board, explore 3D spaces or compare two planes in the rotating 4D projection. On iPad, use flat and spatial views side by side. On an open iPhone Duo, play on linked flat and spatial boards, swap their sides and keep your position. In Classic chess, the open display gives you a larger board with compact player rows and move history beside it; controls stay within reach when you close or rotate iPhone Duo. PLAY YOUR WAY Compare opening mini maps and preview your starting position in 2D, 3D or 4D before starting a game. Play offline against an on-device computer opponent or take turns with a friend on one device. No account is needed for offline play. Explore compact openings, a full army on 96 squares and an experimental four-space 8×8 board with 256 squares. PLAY ONLINE Create a private room, join with a code or QR scan, or find another player seeking a game. Choose Classic 8×8 or compact Fourfold, with untimed play or 5 or 10 minutes per player. Classic online play is unassisted. Online play requires an app account; Apple, Google and guest sign-in are available. Recent online games can be revisited while they remain available. THINK BEFORE YOU MOVE Quick helper lets you rehearse a move before committing. Ask Pawnie for contextual guidance, follow captured pieces, review moves and explore Classic variations with PGN import and export. If either player turns Pawnie off, it stays off for that match without changing the other player’s saved preference. Core games, online play, replay, basic analysis and existing lessons remain free. GO FURTHER WITH FOURFOLD PLUS An optional monthly or yearly auto-renewing subscription unlocks Full helper with one possible opponent reply, deeper match analysis, additional saved-position reviews and personal practice, unlimited access to all puzzles, all advanced 4D Academy exercises, and study notes, collections and insights. Study is stored on your device. Free Study includes one new completed review per day and three new practice exercises per week. Saved work is retained if Plus expires. Analysis is a bounded search suggestion, not a guarantee of the best move or a prediction of winning chances. Demonstrations and previews do not change your game until you choose to play a move. MAKE YOURSELF AT HOME Return to saved games, follow your learning progress and choose Light, Dark or System appearance. Available in English, Ukrainian, Spanish, French, German, Brazilian Portuguese, Japanese and Simplified Chinese. Subscriptions renew automatically unless cancelled in your Apple account settings. Prices and billing periods are shown before purchase. Manage or cancel your subscription through Apple; restore purchases from the Plus screen. Privacy Policy: https://tessermate.dastan.chatgpt.site/privacy/ Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/