One board. Every cell up for grabs. Claim it first.
Your badges
🏆 Leaderboard
Race results since this server started — practice games don't count, and the table resets when the server restarts.
🏁 Everyone plays the same board. The first correct digit in a cell claims it in your colour — and it can't be taken back.
🔥 Every claim is worth 100 points × your streak multiplier: consecutive claims climb ×1 → ×4.
❄️ A wrong guess costs 50 points, breaks your streak and freezes you for 15 seconds — and everyone sees it flash.
✏️ Pencil marks: toggle Notes (N) or hold Shift with a digit to jot candidates; Delete clears them. Notes still work while frozen.
⌨️ Arrow keys move the selection; the selected row, column, box and matching digits light up.
🤖 Bots race for cells too. First into a room picks the bot tier (Rookie, Pro, Grandmaster) and how many opponents; bots only fill seats humans don't take. The host can also add or remove bots from inside the room before the start.
🏆 The game ends when the last cell is claimed. Most points wins; ties go to the most claims, then the earliest last claim.
⏱ Races are on the clock (10 minutes). When time runs out the board stops and whoever leads on points wins.
🔊 Sound and vibration cues for claims, wrong guesses, combo-ups, thaw and finish — press M or the 🔊 button to mute.
👋 Invite friends: open a private lobby, copy the link, and start when everyone is in — bots only fill the seats your friends don't. Tick "Approve each friend" to vet everyone who opens the link before they get a seat.
🧘 Or practise solo: same board and scoring, no countdown, no bots, and it never counts as a race result.
📅 Today's daily: one shared medium board per day (UTC), the same for everyone, humans only, with its own leaderboard. Play as often as you like — only your best run counts.
🏅 Tick Ranked to race for rating: everyone starts at 1000, the ladder is per name (pick one and keep it), you're matched with similar ratings, and every entrant is scored on finishing place. Ratings live in memory and reset when the server restarts.
💬 React to the race: emoji and preset phrases (Good luck, GG, Nice move…) go to everyone in the room, spectators included. No free-text chat.
✉️ Sign in by email (optional): we email you a one-time link, no password. Signed in, your display name, rating and standings follow your account instead of whatever name you typed — and you stay signed in on this device for 30 days.
🧩 Every board has a puzzle code. Share its link and a friend plays the exact same board — or print the grid and solve it on paper.