D3C1PH3R

D3C1PH3R hides a number rather than a word. The board sets a secret digit sequence, counts your guesses against a ceiling of eight and runs a clock in the corner while you think. What sets it apart from the rest of the code-breaking shelf is the week: the code starts simple and, in the game's own words, gets brutal by the end of it, then the whole run resets every Monday. The board carries a coloured difficulty badge so you always know where on that ramp you have landed; the Easy board, for instance, shows a green badge and asks for three digits.

1. Press Start Game on the landing page to reach the board.
2. Fill the digit slots, three of them on the Easy board, and press ENTER. A line under the slots counts how many digits you have entered so far.
3. Use what each guess returns to narrow the sequence, watching the GUESSES counter in the header, which runs against eight, and the TIME counter next to it.

Number code-breaking is a fine puzzle on its own, but the weekly ramp is what makes this one worth a habit. Most dailies sit at one difficulty forever, so you either outgrow them or bounce off them on day one. Here Monday is a warm-up and the same game turns nasty by the weekend, which gives a week an actual arc and turns the question printed on the front page, whether you can make it to Sunday, into a real challenge rather than a slogan.

Before the first attempt, what is visible is the frame around the board: a TIME counter that starts immediately, a GUESSES counter reading zero out of eight, the difficulty badge for the day, and a panel above the digit slots that reads Enter your first guess and is plainly where the response is going to land.

The weekly run

One code per day whose difficulty climbs across the week, with the run resetting every Monday and the board carrying a coloured difficulty badge.

Squads

A signed-in feature the landing page advertises as joining a squad and competing with other players. The board itself opened and ran without an account.

• You do not need to sign in. Sign In sits in the header and squads are pitched next to it, but the board opens straight off the Start Game button.
• The clock starts before your first guess, so take in the digit count and the difficulty badge on the way in rather than after the timer is already running.
• Difficulty is a property of the day, not a setting you chose badly. If a code feels vicious, that is the week doing its job, and Monday puts it back to the bottom of the ramp.