Tea set #174
Strong brew · three games · about 4 minutes
Cups in this set
Each cup counts when you play it at the level shown here.
This pot has been left to steep: hard levels, quick flashes and bigger grids.
In this pot: hold it in mind, a steady eye, counting. It opens with Number Span and finishes with Step Back.
What is in the pot
| Cup | Game | Level | First task | Time |
|---|---|---|---|---|
| 1 | Number Span | In order · Hard | 5 digits | about 2 min |
| 2 | Quick Sums | Percentages | 50% of 32 | about 1 min |
| 3 | Step Back | Position · 3 back | 23 squares | about 1 min |
The three cups
Cup 1: Number Span
Number Span, In order · Hard: carrying a number while it grows. The first number has 5 digits, each shown for 0.52 s.
Tip: The numbers never repeat a digit twice in a row and never run in steps like 4-5-6, so you do not need to guard against those.
Cup 2: Quick Sums
Quick Sums, Percentages: steady mental arithmetic against a gentle clock. Sixty seconds; the first problem is 50% of 32.
Tip: For subtraction, count up from the smaller number instead of down from the larger one.
Cup 3: Step Back
Step Back, Position · 3 back: keeping a short list moving through your mind. 23 squares, 6 of them matches, on 7 places of the board.
Tip: Say the last items under your breath and drop the oldest each time: ‘K, R’ becomes ‘R, T’.
Every cup in set #174 has a fixed seed, so anyone who opens this set gets the same patterns, trails, sums and waits. Your own ticks and results are kept only in this browser.