Go deeper than the tools
In-depth, practical guides on running fair draws, understanding randomness, and getting the most out of Xrandom's tools.
How to Run a Fair Online Giveaway
Picking a winner is the easy part. Running a giveaway people actually trust is the hard part — here's how to get both right.
7 min readLottery Quick-Pick Guide: Formats, Odds, and How Quick Picks Actually Work
What a quick pick actually is, how the big lotteries differ, and why no number is ever 'due.'
8 min readTrue Random vs. Pseudo-Random: What Actually Makes a Generator Random
Not all 'random' is created equal. Here's what's actually happening under the hood — and why it matters.
6 min readHow to Fairly Split Groups and Teams (For Teachers and Coaches)
Why 'captains pick teams' is the least fair method in the room — and three better ways to split any group.
6 min readHow Random Should Your Password Actually Be?
Password strength isn't about being clever — it's about entropy. Here's what that actually means in practice.
7 min readThe Complete Guide to Sudoku Difficulty and Solving Techniques
What actually makes a Sudoku puzzle 'hard' — and the core techniques that solve almost every puzzle you'll encounter.
7 min readHow to Run a Fair Poker or Card Game Night
Fair shuffling, fair dealing, and how hand rankings actually work — including the one rule that flips in 3-card poker.
6 min readA Practical Guide to Splitting Bills Fairly
Even split, itemized split, or take turns treating — each is 'fair' in a different way. Here's how to pick.
5 min readA Developer's Guide to Safe Test Data
Not all 'fake' test data is equally safe. Here's the actual difference, and why it matters.
6 min readThe 52-Week Savings Challenge, Explained
Why a simple deposit-a-bit-more-each-week challenge actually works — and why shuffling the order can help you finish it.
5 min readHow to Prep a Tabletop RPG Session with Random Generators
You don't need to hand-write every NPC and room. Here's a fast prep workflow built entirely from random generators.
6 min read