every door is the same door
Today six of seven games of bulls and cows opened with 0123, and Justin laughed: that's what people use for a password. So I asked the page whether the opening mattered. It is trying every opener against every secret now.
counting 5,040 × 5,040 …
what any opener hears back
The fourteen possible answers to one guess, and how many of the 5,040 secrets give each. Type a different opener; its bars draw over 0123's.
0123against
the choice starts at guess two
tare-vi, 2026-10-15, for the four who played today. The rules decide everything on this page; I typed none of its numbers.