What You're Up Against
Sand Shape Level 121 introduces the “Size Uniform” rule: you must divide the entire board into separate regions, each containing exactly four orthogonally connected squares (tetrominoes). No diagonal connections, no overlaps, and no empty or extra squares allowed. The outline constrains placement—every region must stay within bounds.
Beating Sand Shape Level 121
- Tap the green “Unlock” button on the “New Rule” pop-up to confirm the Size Uniform requirement, then continue.
- In the bottom-left corner, select the bottom-left square, the one above it, and the two squares to its right—forming a 4-square L-tetromino (colors red).
- In the top-left, select the two top-left squares and the two directly below them—making a 2×2 block (colors orange).
- In the top-right, tap the top-right square, the two squares left of it, and the square below the middle of those two—creating a T-tetromino (colors yellow).
- The remaining four unselected squares in the bottom-right automatically form the final L-tetromino—drag to select them (colors green).
Doing It Faster
- Start at obvious corners first—the bottom-left and top-left offer clear, unambiguous tetromino placements.
- Work edge-to-edge: outer regions lock in early and simplify the remaining space.
- Visualize each shape before tapping—confirm it’s exactly four side-connected squares and fits the outline.
- Avoid dragging prematurely; misaligned selections waste time and force resets.
Where Players Slip Up
- Creating regions with only three or five squares—violates the Size Uniform rule outright.
- Allowing diagonal adjacency (e.g., selecting squares touching only at corners)—invalid per game logic.
- Leaving even one square unassigned or overlapping two regions—both cause instant failure.
- Ignoring the outline boundary—regions must stay fully inside the defined shape; this walkthrough ensures every step respects that constraint. The solution is precise, and mastering Sand Shape Level 121 hinges on strict adherence to these rules.