Working memory
Pincode Game
A timed memory drill that trains digit span and mental manipulation. A sequence flashes one digit at a time, then you type it back: in order, reversed, or sorted low to high. The sequence grows as you get them right, so it always sits at the edge of your memory, or you can cap it and drill one length until the technique sticks. A staple of trading-firm cognitive assessments.
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Sign up →Frequently asked questions
What is the Pincode Game?
The Pincode Game is a working-memory drill used in trading-firm cognitive assessments. A sequence of digits flashes one at a time, and once it finishes you type it back. It trains how many digits you can hold in memory and how quickly you can recall them under time pressure.
What's the difference between Repeat, Reverse and Sort mode?
In Repeat mode you type the sequence back in the same order it appeared. In Reverse mode you type it back from the last digit to the first. In Sort mode you type the digits back sorted from lowest to highest. Reverse and Sort add a mental re-ordering step on top of recall, so they are available with a premium subscription.
How does the difficulty change?
By default the session starts at 5 digits, and the sequence grows by one digit after each correct answer and shrinks by one after a mistake, staying between 4 and 8 digits, so the length always settles near the edge of your memory span.
Can I practise one sequence length?
Yes. The sequence length setting has two plans. Adaptive keeps the usual ramp but never goes past the length you choose, so you can cap a session at 5 or 6 digits instead of climbing to 8. Fixed gives you that exact length on every sequence, which is the one to use when you are building a technique on shorter sequences before moving up. Both plans are free, and the setting is saved with your bookmark.
Which settings should I be comfortable with before an assessment?
Aim to be comfortable on the default plan, adaptive up to 8 digits, reaching 7 digits with your accuracy at or above 80%. Digit span runs out around 7 for most people, so that is where technique rather than raw memory decides it. Getting there is a ladder: pin the length at 5 or 6 until you clear a session without hesitating, raise the cap a digit at a time, then go back to the full adaptive range to see where you actually stand. A high score on a short fixed length is practice, not a measure, so check yourself on the full range before a test.
How do I answer?
Type the digits with the on-screen numpad or your keyboard, use backspace to fix a digit, and press Enter (or the Enter key) once all the boxes are filled. You score +1 for a correct answer and lose 1 point for a wrong one.
How long is a session?
You set the session length with the timer slider, anywhere from 1 to 10 minutes (1 minute is a good default). Answer as many sequences correctly as you can before the timer runs out. Both speed and accuracy matter, so stay accurate rather than rushing.