Type a year, or use the arrows: up and down change the decade, left and right the year. Enter guesses, space skips, f flags, e copies the explain prompt.
1957
Stats
By decade
Error is mean years off. Lean is the mean signed error: positive means you guess too new.
Decade
Cards
Error
Lean
Error bar
Flagged photos
File names you flagged on this device. Append them to guesser_ignore.txt in the dataset directory on JFS and re-export to drop them for everyone. When the page runs from the local server, the ban button does that directly.
About
Photos come from Wikimedia Commons' "Automobiles by year" categories and are shown straight from Commons under their own licences; the answer sheet credits the photographer and links to the file page. The year is the model year as filed by Commons contributors, and they are occasionally wrong, which is what the flag button is for.
Settings
Deck
The deck is dealt in one shuffled order per pass, and a refresh carries on where you were. Decades outside this range are passed over, not lost.
Local server
Not running from the local server, so the ban button is hidden. bazel run //sites/auto_year_guessr:serve_main serves the page and the deck from JFS and writes bans to the ignore list there.
Move progress between devices
Everything lives in this browser. Copy the text out here and paste it into the same box on another device, then press Import.
Reset
Reset stats forgets guesses and skips, reshuffles the deck, and keeps flags. Reset everything also forgets flags and photos marked as gone from Commons.