What the game is, and what it does not do.
Davazdah is a small daily game by Moe Chizari. Nothing is sold to players. Below: how a day works, what the score means, and what happens to your record.
What it is
Each day asks one question about the world and answers it with real data points, twelve shown and one held back, copied from a public source named on the day. You guess the pattern, then read the points and predict one more. The least-squares line is then shown as feedback: what it would have said, how far you and it were off, and why. Two moves a day, the same puzzle for everyone.
A small game by Moe Chizari. Davazdah is Persian for twelve.
The game needs JavaScript to draw the plots.
Nothing is sold to players
The game has no account, no payment and no advertising.
One thing is sold, to brands and not to players: the same game under a brand's name, on the brand's own page. That offer, its price and its seller are on the page for brands.
The day
The day is the date on your own device, so a new puzzle starts at your midnight. A page left open past midnight keeps the old day until you reload it.
Only a finished day is kept. If you reload in the middle of a day, that day's moves start again.
An address ending in ?day= and a date opens the puzzle of that day. A day earlier than your last game does not change your record. There are 42 puzzles, first shown from 16 October to 26 November 2026; after that they repeat in order, and the page says so. The list of past puzzles links every day from No. 1 to yesterday.
The score
Each move is scored out of 100 and a day out of 200. The guess of the pattern scores 100 when it matches the correlation of the points and loses 12.5 points for each tenth it is off. The prediction scores 100 when it is exact and 0 when it is off by one and a half times the spread of the points or more. The least-squares line's own prediction is scored the same way and shown beside yours; it does not count toward your score. Until 22 October 2026 a day had three moves and 300 points; your average is kept as a percent so the two count alike.
The score is worked out in your browser and sent nowhere. Nobody checks it. There is no ranking and nothing to win.
Your record
Your streak and averages are kept in your browser only. If you clear this site's data, or play in another browser or on another device, the record starts again. There is no copy to restore it from.
A result you copy is plain text. Whether you share it, and where, is up to you.
Your information
What the game learns about you, and where it goes, is on the privacy page.
Changes
If this page changes, the date below changes.
Last changed 22 October 2026.