Five levels to explore at your pace.
Start with a first capture and progress toward plans that connect dimensions. Follow the levels or return to an idea that needs practice. Movement labs and the full course remain available alongside the puzzle collection.
Six challenges that connect the views.
Spatial challenges help you follow moves between layers and spaces. Switch between 2D, 3D and 4D while solving the same position, so a change of perspective becomes part of understanding the move.
See how the views connect →How free puzzle sets work.
- Free players receive a set of three puzzles.
- Unfinished puzzles stay available until they are solved. Retries within the current set are free.
- After all three are solved, the next set opens the following day.
Waiting alone does not refresh an unfinished set. This is not three new puzzles automatically delivered every day. Fourfold Plus gives unlimited access to the full collection of 102 puzzles.
Build a daily practice habit.
Finish a challenge to build your daily streak. Hints are welcome. Learning and streak progress stay on this device.
Puzzle access is separate from the free Study allowance of one new completed review per UTC day and three new personal practice exercises per UTC week.
Compare free access and Plus →New to spatial chess?
Start with The Lost Signal, the free twenty-chamber story with Pawnie. Then return here for shorter practice sessions.
Meet Pawnie and start the story →