The Gilded Order / guide

The Royal Grid — the guide.

Rules, controls and a worked visual example. All assistance is free and the game has no timer.

ONE IDEA, SHOWN CLEARLY

Find the place that can only be one thing.

Use the marks 1–4 exactly once in every row, column and two-by-two chamber. The given marks stay fixed.

1234341221434321

A complete example: every row, column and small chamber contains 1–4.

Select an empty square, then choose one of the four numbered marks below the board. Keyboard keys 1–4 work too.

Each row and each column needs one of every mark: 1, 2, 3 and 4. A repeated mark is outlined in ruby.

The thicker lines divide the board into four two-by-two chambers. Each chamber also needs all four marks.

Clear removes your selected entry. Hint supplies one correct mark. Undo and Reset let you revisit a decision without changing the original clues.

Controls are labelled for touch and keyboard use. Game progress is temporary; a page reload starts again.