Mind sports

The ladder

1. Ages 3–5 Not made yet.

   The nearest rung is two up, Ages 9–14: What Day Was It? →

2. Ages 6–8 Not made yet.

   The nearest rung is one up, Ages 9–14: What Day Was It? →

3. Ages 9–14
   • What Day Was It?Step the weekday forward by years and leap yearsOpen →
4. Ages 15–18
   • Fifty-Two Cards in OrderCount the orders a deck of cards can takeOpen →

Two rules every rung keeps

The Fade Rule. Every game ends on a plain screen: the same numbers with the mind sports words gone, so the maths leaves with you.

The Own-Lane Rule. Your numbers are compared only with your own past, never with anyone else's, and they stay on this device.

Problems built on something you love help most when the context carries the maths, not when it decorates it. These ladders are a design, not a promise.

Ask a grown-up tonight: “Which trick would you like to be able to do in your head?”