Guides
Long-form writing on the subjects behind the tools — money, measurement, code and sport. 21 articles, all free.
Jul 29, 2026 · football
World Cup 2026: The Complete Picture — Spain's Second Title, Mbappé's Record, and the Verdict on 48 Teams
Spain beat Argentina 1–0 in extra time at MetLife Stadium to win their second World Cup. Here is everything that happened across 39 days, 104 matches and three countries — the results, the records, and what the expanded format actually delivered.
Read the article →Sep 17, 2026
games
Free Browser Games With No Download and No Sign-Up — What That Actually Means
A browser game that needs no download and no account is not a stripped-down version of a real game — for whole categories of game it is the correct form. Here is what runs where, what it costs you, and how to spot the ones that are not really free.
Sep 17, 2026
games
Educational Games That Actually Teach Something: A Guide for Classrooms and Home
Most "educational games" are a worksheet with points bolted on. The ones that work share a specific structure — fast retrieval, immediate feedback, short sessions — and a set of practical properties that decide whether a teacher can actually use them.
Sep 17, 2026
sudoku
How to Play Sudoku: The Rules, and the Techniques That Solve Almost Every Puzzle
Sudoku has one rule and four techniques. Learn the rule in a minute, the first two techniques in an afternoon, and you can finish any easy or medium grid ever printed — without ever guessing, which a well-made puzzle never asks you to do.
Sep 17, 2026
games
Tic Tac Toe Is a Solved Game: How to Never Lose It Again
With both players playing correctly, every game of tic tac toe is a draw. Learning why takes about ten minutes, and it turns the game from luck into a short, complete lesson in looking one move ahead.
Jun 30, 2026
science
Why 40 °C Feels Deadly in Europe but Normal in Dubai: The Real Science of Heat
A thermometer reading of 40 °C can mean a normal day in Dubai and a deadly emergency in Paris. The number is identical — so why are the outcomes so different? The answer is a mix of humidity, human physiology, and the buildings we live in.
Jun 27, 2026
next.js
How a Next.js 16 Default Quietly De-Indexed My Site (and the One-Line Fix)
My organic traffic fell off a cliff after a routine framework upgrade — no Google penalty, no hack, just pages silently dropping out of the index. The cause was a single rendering default in Next.js 16. Here is how I tracked it down and the one line that fixed it.
Jun 23, 2026
math
How to Calculate Percentages: The Mental-Math Tricks That Actually Stick
Percentages trip up more capable people than almost any other everyday maths. The secret is that nearly all of it comes down to one formula and a couple of tricks you can do in your head.
Jun 19, 2026
privacy
Are Online Tools Safe? How "Client-Side" Tools Keep Your Data Private
Pasting an API key into a random website to "format" it sounds risky — and sometimes it is. Here is how to tell whether an online tool processes your data privately in your browser or quietly uploads it to a server.
Jun 19, 2026
math
Heads or Tails? The Surprisingly Useful Math of Random Decisions
A coin flip feels almost too simple to be interesting — but it is a tiny lesson in probability, human bias, and how to break a deadlock when you genuinely cannot decide.
Jun 18, 2026
json
JSON Explained: What It Is, Why It Breaks, and How to Fix It
JSON runs the modern web, but a single misplaced comma can break an entire file. Here is what JSON is, the handful of rules it enforces, and why your file refuses to parse.
Jun 17, 2026
productivity
The Pomodoro Technique: A No-Nonsense Guide to Actually Focusing
Work for 25 minutes, break for 5, repeat. It sounds too simple to matter — but the Pomodoro Technique works because of how it changes your relationship with starting and with distraction.
Jun 16, 2026
qr codes
How QR Codes Actually Work — and How to Use Them Safely
QR codes are on menus, posters, tickets, and payment screens everywhere. Here is what is really inside that little square — and how to scan and create them without getting scammed.
Jun 14, 2026
web design
HEX, RGB & HSL Explained: A Practical Guide to Web Color Codes
A color on a screen can be written as #4F46E5, rgb(79, 70, 229), or hsl(243, 75%, 59%) — all the same purple. Here is what each format means and when to use which.
Jun 13, 2026
football
World Cup 2026 Explained: 48 Teams, 3 Host Nations, 16 Cities & the New Format
The 2026 World Cup was the biggest ever: 48 teams, three host nations, 16 cities, and 104 matches. Here is exactly how the new format worked, from the 12 groups to the new Round of 32.
May 26, 2026
tools
10 Free Online Tools That Replace Paid Apps (No Signup Required)
Most paid utility apps charge for features that should be free. Here are ten browser-based tools that cover the most common everyday tasks — no account, no installation, no subscription.
May 20, 2026
security
How to Create a Strong Password in 2026 (And Actually Remember It)
Password123. iloveyou. Your pet's name followed by your birth year. These are the passwords attackers try first — and they work millions of times a day. Here is what actually makes a password strong, why length beats complexity, and the one habit change that eliminates most account security risk.
Apr 25, 2026
cricket
PSL 2026 Recap: Peshawar Zalmi Champions, Hyderabad's Dream Debut, and Babar's Record Season
PSL 2026 had everything: an expanded eight-team field, a debut franchise reaching the final, a record-equalling batting season from Babar Azam, a leg-spinner topping the wicket charts, and a final delivered by an Aaron Hardie all-round masterclass. Here is how the biggest PSL season in history actually played out.
Apr 15, 2026
cricket
PSL vs IPL in 2026: Format, Rules, and Where the Two Leagues Actually Differ
Both the PSL and the IPL are domestic T20 leagues built around city franchises, but they differ in ways that materially affect how matches play out — team count, overseas caps, draft mechanics, the impact-player rule, and the commercial scale they each operate at. Here is the honest, structural comparison in 2026.
Mar 15, 2026
development
UUID v4 vs UUID v7: Which Should You Actually Use in 2026?
UUID v4 is the default everyone reaches for. UUID v7 — standardised in RFC 9562 in 2024 — is winning fast for database primary keys. Here is why the difference matters and when to switch.
Feb 10, 2026
health
BMI: What the Formula Actually Tells You — and What It Misses
BMI is everywhere — doctor visits, insurance forms, fitness apps. But it was invented by a Belgian mathematician in 1832 to study population averages, not to assess individual health. Here is what it does well, where it fails, and what to look at alongside it.