Zol's 64 One crown per row, column and region.

The rules

• The grid is split into coloured regions, as many regions as there are rows.
• Place exactly one crown in each row, each column, and each region.
• No two crowns may touch — not side by side, and not even diagonally.
• Tap a cell to drop a crown or take it back; a mark that breaks a rule lights up red so you can always see your conflicts.
• Get all the crowns down with no conflicts and the puzzle solves itself.

There's exactly one solution, and you can always reason your way to it — no guessing required.

Pick your grid

• Easy — a 6×6 board.
• Medium — 8×8.
• Hard — a full 10×10.
• Zolified — the 10×10 with the region colours stripped out, so you read the shapes from their borders alone, plus a 60-second timer that starts placing correct crowns for you if you stall — at a rising cost.

Every crown you place rules out a row, a column, a region and a ring of neighbours. Follow that chain.

Three ways to play

The Daily is one shared board for everyone. Free Play is unlimited fresh puzzles at any size. And Versus races you and a friend on the same grid — first to a clean solve wins.

Play it

Play Zol's 64 in your browser — nothing to download. Creating an account is free, and new players get a 30-day preview with full access to every game in the catalogue. After the preview, a rotating set of games is free to play each day.

More pure logic: Zol's Suds, fill a grid so every number appears once, Zol's Fields, cut the grid into numbered rectangles, or Zol's Swords & Shields, balance a grid of two symbols.