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定時退社タンゴ
A daily Tango-style logic puzzle that runs with zero backend
Hi Product Hunt! I'm the maker of Teiji-Tango 👋
The name means "leaving work on time" in Japanese — and the rules reflect that: you can't have three 👔 (work) in a row, and you can't have three 🍺 (beer) in a row. Balance is everything.
**Why no backend?**
Today's puzzle is just `Math.floor((Date.now() - START_DATE) / 86400000) % pool.length`. Fully deterministic. I was inspired by the original Wordle being a static site.
**The interesting technical part:**
I built a constraint-based solver with 9 deduction patterns to validate that every puzzle is solvable by logic alone — no guessing. Generating 450+ valid puzzles across 5 modes and 3 difficulties took more iteration than expected.
**5 modes:**
- Standard (classic Tango rules)
- 🧱 Walls — thick borders break the three-in-a-row chains
- 🗂️ Regions — 6 sectors, each must also balance
- ✕ X-Tango — both diagonals get the same constraints (14 lines simultaneously)
- 🔪 Killer — Killer Sudoku style, blank grid, cage sums tell you how many 🍺
Currently 2 modes are live (Standard + Walls). 3 more modes — Regions, X-Tango, and Killer — are unlocking over the next 6 weeks.
Would love to hear what you think of the difficulty!
→ https://teiji-tango.com
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About 定時退社タンゴ on Product Hunt
“A daily Tango-style logic puzzle that runs with zero backend”
定時退社タンゴ was submitted on Product Hunt and earned 4 upvotes and 1 comments, placing #159 on the daily leaderboard. 毎日1問！👔と🍺を並べる論理パズル。バランスよく定時退社しよう。
定時退社タンゴ was featured in Puzzle Games (4.3k followers) on Product Hunt. Together, these topics include over 3.1k products, making this a competitive space to launch in.
Who hunted 定時退社タンゴ?
定時退社タンゴ was hunted by Teiji Tango. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
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Teiji Tango