Daily Math Puzzle (Nerdle) is the daily puzzle game where you have six tries to guess the hidden 8-character mathematical equation released at midnight. Created in the UK in 2022 as the "numbers version" of Wordle, it uses digits (0–9), the four arithmetic operators (+ − × ÷), and equals (=) to deduce a mathematically valid equation — and because it's pure numbers, it's the rare daily puzzle that ignores language barriers entirely.

The answer always follows the shape "[numbers][operator][numbers]=[result]" across 8 cells — for example 12+34=46, 6×8+2=50, or 100/4-9=16. The equation must include exactly one equals sign, and both sides must be mathematically equal. Fill eight cells with digits, operators, and equals, submit, and each cell lights up with a color hint: green for correct position, yellow for present-but-wrong-position, gray for not in the equation at all.

A strong opening equation maximizes diversity of digits and operators. Something like 9+8-7=10 surfaces five digits (9, 8, 7, 1, 0) and three operators (+, −, =) in a single attempt, exposing many of the characters the answer contains. Yellow hits on digits or operators are gold: deliberately reposition them in your next try (left of equals → right of equals, first slot → last slot) to pin down where each belongs.

The key difference from Wordle is that "your input must be mathematically valid." Random strings like "+-=" or two equals signs are rejected, and only equations where both sides match can even be submitted. That constraint turns it from simple letter deduction into a math-reasoning game where you narrow down "which valid equation is the answer." Once multiplication and division enter the mix, the explosion of possible equation values makes the deduction noticeably harder.

Every midnight, the entire planet tackles the same equation, with results shareable as the same Wordle-style emoji block grid. Thanks to its language-free nature, players in Korea, the US, Japan, and Europe all attack the exact same puzzle daily — it's the most truly global daily puzzle out there. A daily math brain warm-up and a friendly vocabulary showdown with students and number-loving friends — that's Nerdle on OgleOgle.