Kaelen possessed the Pawn. He looked at the board from the perspective of the discarded. From the side lines, he could see the Architect’s blind spot. The Architect was focused on the center of the board, the "Main Sequence" of time. He was ignoring the edges—the possibilities that had been discarded.
If you have a friend who owns the game on Steam: 5d chess with multiverse time travel free
However, there are legitimate ways to access it without paying: Kaelen possessed the Pawn
: Move any number of squares along exactly one of the four axes. The Architect was focused on the center of
Chess is 1,500 years old. For most of that history, the biggest argument was whether castling was a legal move. Then, someone looked at a standard 8x8 board and asked a terrifying question: "What if the pieces could travel back in time to kill their own grandfather?"