Quick brain games for every AI wait.

A sum appears; type the answer and it’s accepted the moment it’s right. It starts with small additions and climbs through times tables, percentages and division to squares and chained operations. Estimation questions are multiple choice, so you only need to be close.

• Addition and subtraction
• Times tables and long multiplication
• Percentages and division
• Squares, chained sums, estimation

Something flashes up for a second or two, then disappears. Type the digits back, tap the grid cells in the order they lit up, or answer a question about the colours you saw. Longer and faster as you improve.

• Digit span: type the number back
• Grid sequence: repeat the order
• Colours: which was 2nd? which was missing?

Find the rule, pick what comes next. Number sequences, repeating symbol cycles, rotating arrows, and “which one doesn’t belong?” sets where exactly one item breaks the rule.

• Number sequences
• Symbol cycles
• Rotating arrows
• Odd one out

6  8  15  17  24  ?

↙  ↖  ↗  ↘  ?

Short deduction puzzles you can solve in your head: who’s tallest, what day it will be, which way you face after three turns, syllogisms with made-up words, true/false expressions, time zones and build times.

• Ordering and weekdays
• Compass turns
• Syllogisms and booleans
• Time zones and durations

All tozzles are zarks.
No zarks are bloops.

Read a few lines of JavaScript or Python and pick what they print, plus quick concept questions (Big-O, status codes, binary). The curated questions are checked by actually running the code.

• Predict the output (JS and Python)
• Type coercion and gotchas
• Loops, slices, map/filter
• Concept quickies

print([*range(3)])

function f() {
  return
    42;
}
console.log(f());

Wait for the signal, then press as fast as you can. The GO arrives after a random pause, so you can’t time it. Go early and it doesn’t count. The window for a perfect hit tightens as you get quicker.

• Pure reaction time
• No anticipating: random delay
• Perfect for a 5-second wait