Make 24

Practice Train Survey

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slowest so far this pass

how it works

One pass covers all 1362 solvable sets once, in a random order that's fixed for the pass.
Press any key (or tap) to turn the cards over and start the clock. Press any key again when you have a solution: the time is recorded and the next set is dealt straight away. The set you just did is shown underneath with your time, its solution count, strategy and a solution.
Nothing is graded. Press ← instead if you gave up or got it wrong; that's recorded as a flag.
The pass is saved in this browser, so you can stop and resume. Export it from ⋯ as a CSV with the time for every set, to sort and group however you like.