Blitz (Mind Loft)
Twenty mental math problems, 15 seconds each, one wrong answer ends it.
Every day: Twenty mental arithmetic problems a day, the same problems in the same order for every player, 15 seconds each and one life, ranked on a daily leaderboard. New puzzle: Midnight US Eastern Time.

Blitz is a free daily mental math game from Mind Loft. Twenty arithmetic problems climb through five rounds, from two-digit addition and times tables to two-digit multiplication, percentages and cubes, with four answers to choose from and one life.
About Blitz (Mind Loft)
Blitz is a ladder of twenty arithmetic problems done in your head. The five rounds start with two-digit addition and subtraction and the times tables, and work up to two-digit multiplication, awkward percentages, order of operations and cubes. Each problem has four answer buttons (keys 1 to 4 work too) and a fifteen-second clock.
The wrong options are chosen with care: each one is a mistake people really make, such as a dropped carry, the neighbouring row of the times table, reading a line left to right when precedence applies, or the cube next door. That means you cannot spot the right answer by its last digit or its size; you have to do the sum.
One wrong answer or an empty clock ends the run, and your score is how far up the ladder you got. Everyone plays the same twenty problems in the same order, so the leaderboard ranks the furthest run and breaks ties on time. Blitzed is the harder sibling, with three numbers on every line.
How to play Blitz (Mind Loft)
- Open Blitz and press Start; the first problem appears with a 15-second clock.
- Work out the answer in your head.
- Tap the matching option or press its key, 1 to 4.
- Keep going until you miss or run out of time; your score is the number cleared.
Screenshots

Tips
- Check the last digit and the rough size together; the decoys are built to pass one of those tests but not both.
- In the order-of-operations round, multiply and divide before you add.
- For percentages, find 10 percent first and scale from there.
Questions
What time does Blitz reset?
A new Blitz set of problems goes up every day at midnight US Eastern Time, the same for every player.
Is Blitz free?
Yes. Blitz plays in the browser on Mind Loft with no app and no account. Signing up with a display name (no password) puts your result on the daily leaderboard; an email is optional.
Can I play earlier Blitz puzzles?
Yes. Mind Loft keeps an archive of past Blitz boards together with each day's standings.
Can I use the keyboard in Blitz?
Yes. Keys 1 to 4 pick the four answers.
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