Puzzle
—
Easy (4 digits)
Σ
—
sum
Shape
—
a ? b ? c …
O/E
—
odd/even slot
P
—
prime digits
U
—
unique
Σ²
—
sum of squares
Tip: tap a card for a hint.
Streak
0 (best 0)
Next
—
How NumberGlyph works (60 seconds)
Tiles + fingerprint → quick “aha”.
1) Guess in 6
You’re hunting a secret number. Each guess gives tile feedback (like Wordle).
🟩 right digit + place
🟨 right digit, wrong place
⬛ not in the number
2) Two free clues
You always get Σ (sum of digits) and Shape (how digits go up/down).
Shape example (4 digits)
6 0 8 1
6>0, 0<8, 8>1
→ ><>
3) Tap reveals (optional)
Want a nudge? Tap cards to reveal extra fingerprint clues. They don’t change the answer.
O/E = odd/even slots
P = prime digits
U = unique count
Σ² = sum of squares
One worked example (super quick)
Imagine the secret is 6081. You’d see:
Fingerprint: Σ = 15 Shape = ><>Now guess 6012:
6
0
1
2
→ 🟩🟩🟨⬛
- 6 correct spot
- 0 correct spot
- 1 exists somewhere else
- 2 not in the number
Tiles + Shape legend
- 🟩 correct digit, correct position
- 🟨 digit exists, wrong position
- ⬛ digit not present
- Shape: > down, < up, = same
Made by me 👋
I like puzzles that give you a quick “aha” and leave you feeling a little sharper. NumberGlyph is my calm daily brain-trainer — one puzzle per day (UTC), three modes, done in a minute or two.
Contact: @numberglyph