How to play.

Play as many of your 89 squares as you can.
Each player has the same 21 shapes. Use each shape once.

Find your foothold.

Your first piece must cover your starting square. Take turns in the order shown.

Classic

4 players · 20 × 20

The four physical corners. Cobalt → coral → gold → sage.

Duo

2 players · 14 × 14

Start inside, not at the corners. Cobalt → coral.
Column 5, row 5 and column 10, row 10, counting from 1.

Corners. Never your own edges.

After your first move, touch at least one corner of your own color. Never share an edge with your own pieces.

YesA corner connection. Same color, just a point of contact.

× NoAn edge connection. Your own pieces need breathing room.

Other colorsTheir edges are fine. You still need your own start or corner.

Every square must land inside the board, in an empty cell. No overlaps. The diagrams show contact, not a full turn.

Same piece. New perspective.

Rotate in quarter-turns or flip before you place. The shape stays whole—no splitting, resizing, or reusing it.

Original

Rotate 90°

Flip

Less left. More points.

No legal move? You’re automatically skipped for the rest of the game. You can’t pass if a legal placement remains. When nobody can move, the game ends.

5 squares left = −5Each unplayed square is −1 point.

+15

Nothing left?Play all 21 pieces for +15 instead.

+20

Save the single square for last.All pieces played, single-square piece last: +15 +5.

Highest score wins.
Tied players share the win.

A resigned player cannot win. If everyone but one player resigns, the remaining player wins immediately, regardless of score. Deleting an account resigns its active seats.

Open Cornered

Requires an installed Cornered test build.
No public App Store release yet.