Backspace is switched off. Every key you press stays where it lands, so the only way to a good score is to type it right the first time.
This is a normal timed test with one rule removed: Backspace does nothing. Words come from the same everyday list as the standard test and the scoring is the same, so net words per minute counts only words you typed correctly. The difference is that a slip cannot be undone. The wrong letter sits there, the word is marked wrong, and you move on.
Pick 15, 30, 60 or 120 seconds above. The clock starts on your first key, and Tab starts a fresh run whenever you want one.
Most typists lose more time to fixing mistakes than to the mistakes themselves. Every correction means stopping, noticing, reaching for Backspace, deleting and retyping, and that pause leaks into the next word too. Typists who are stuck at a speed are often making the same few errors over and over and quietly mending them.
Taking Backspace away does two useful things. It makes your real error rate visible, because nothing gets tidied up before the result. And it changes how you type: most people slow down a fraction, settle into a steadier rhythm, and find that their speed barely drops while their accuracy climbs. That steadier rhythm is what carries over to normal tests.
A few sessions a week is plenty. If you want the same discipline inside the normal test, the Confidence setting can switch Backspace off everywhere, and Stop on error refuses a wrong key altogether.
Every challenge has its own leaderboard, one for each length. Sign in and your best run of the day, the week and all time can appear there, next to your character. If you would rather not sign in, everything still works and your results stay in your browser.
Because correcting is slow. Each fix costs at least two extra keystrokes and breaks your rhythm, and in a normal test it hides how often you really miss. With Backspace gone, your accuracy figure is your real accuracy, and the only way to raise your score is to make fewer mistakes.
The wrong letter stays. Keep going: finish the word as best you can, press Space and carry on with the next one. A word with an error in it does not count towards your net speed, which is exactly the point.
It usually reads a little lower, because every slip costs you the whole word. Compare it with your own earlier no backspace runs at the same length. Many typists find the gap between the two scores shrinks as their accuracy improves.
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