Regex Roulette · #29 · 2026-05-03
Match CSV rows with exactly 3 comma-separated fields
Difficulty 2/3
How to play
Write a regex that matches all green strings and rejects all red strings. Live feedback shows which strings pass. Shorter patterns score better.
Must match
- a,b,c — not yet evaluated
- 1,2,3 — not yet evaluated
- hello,world,! — not yet evaluated
Must not match
- a,b — not yet evaluated
- a,b,c,d — not yet evaluated
- nocommas — not yet evaluated
- ,a,b — not yet evaluated
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Pattern body only — slashes and flags (e.g. /g, /i) aren't part of the input.
0/200 chars
Type a regex that matches all green strings and rejects all red strings · Back to hub