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Synapse Sprint

Number Span — step 23

Target8 digits or more
LevelBackwards · Hard
Run code34F0-7A4B

Open. Reach the target to open step 24.

Setting up the lane…

What this step asks

Type back a number of 8 digits backwards, last digit first on the Backwards · Hard level. The first number has 5 digits and every correct answer adds one, so 4 correct answers take you there. You have 14 rounds and 3 lives.

The numbers behind the target

  • Each digit is on show for 520 ms with 160 ms before the next, so a 8-digit number takes about 5.4 s to appear.
  • No digit repeats back to back and there are no runs like 4-5-6.
  • Rounds to spare for slips: 10 of 14.

Before you start

The top steps ask for a clean and steady run. Take a short break between attempts; a fresh try tends to go further than a fifth one in a row.

The run code fixes the tasks, so every retry is the same course. What you learned on the last attempt still applies.