Three Digits, One Picture
An hour, a page of random digits and a champion's three-digit syllables. How to pack even more into every picture.
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One hour, a thousand digits
In a large hall, a competitor sits in front of a sheet of paper covered in rows of random digits. There are no words, no names, no dates: just 7, 3, 9, 1, 0, 4, 2, and thousands more. The rule is simple. You have one hour to learn as many as you can, and then you must write them back in order.
This is one of the long events at a memory championship. The best competitors in the world learn thousands of digits in an hour, and then recall them with only a few mistakes. For this event, one picture for every two digits is too slow. They need a picture for every three.
A British memory athlete, Ben Pridmore, who won the world title several times in the 2000s, is the person after whom a three-digit system is named. The idea is natural: if two digits can be one picture, three can be one picture too. The cost is size: instead of 100 pictures, you need a thousand, one for every number from 000 to 999.
To build a thousand pictures you need a rule that makes them quickly. The rule is the syllable. A syllable has a start, a middle and an end. Three digits: three sounds. That is the key to the whole system.
The cost is not as high as it sounds. You will not build the thousand in a week. Most people start with a hundred and add a hundred at a time. And the pictures are not random: they come from a rule, and the rule gives you a word or a name or a sound-alike for every number.
In this lesson you learn the rule. The first digit gives a consonant, the second a vowel, the third another consonant, and the three together give a syllable. A syllable is a word, or close enough to one to make a picture.
Words worth knowing
Say what you think each one means, then open it.
The three-digit system is named after the British memory competitor Ben Pridmore. Vowel assignments differ from one person to another; the table below is one that works and is used in this course.
Consonant, vowel, consonant
Take three digits. The first and the third become consonants (from the Major System). The middle one becomes a vowel sound (from a table). The result is a syllable.
| Digit | Consonant (first and last) | Digit | Vowel (middle) |
|---|---|---|---|
| 0 | s, z | 0 | oo (moon) |
| 1 | t, d | 1 | a (cat) |
| 2 | n | 2 | e (bed) |
| 3 | m | 3 | i (pin) |
| 4 | r | 4 | o (hot) |
| 5 | l | 5 | u (cup) |
| 6 | j, sh, ch | 6 | ay (day) |
| 7 | k, g | 7 | ee (see) |
| 8 | f, v | 8 | igh (high) |
| 9 | p, b | 9 | oh (go) |
- Write the three digits. 372.
- First digit, a consonant. 3 = m.
- Middle digit, a vowel. 7 = ee.
- Last digit, a consonant. 2 = n.
- Say it. m + ee + n = MEAN. Picture someone mean: scowling, shouting.
| Number | Sounds | Word | Picture |
|---|---|---|---|
| 372 | m ee n | MEAN | A scowling person shaking a fist |
| 914 | p a r | PAR | A golf ball at the hole |
| 541 | l o t | LOT | A car park, full |
| 133 | t i m | TIM | A friend called Tim |
| 107 | t oo k | TOOK | A thief running away with a bag |
| 360 | m ay s | MAZE | A hedge maze |
| 705 | k oo l | COOL | A boy in sunglasses |
| 981 | b igh t | BITE | A shark biting |
| 412 | r a n | RAN | A runner crossing a line |
When the syllable is not a word
Some syllables are not words. 823 = f + e + m = fem? Use a similar-sounding word (fan), a name (Fenn), or an abbreviation. The picture must be one you can see and always the same.
The cost and the pay-off
| PAO | Three-digit | |
|---|---|---|
| Pictures to learn | 300 (100 people, actions, objects) | 1,000 pictures |
| Digits per picture | 6 (three pairs) | 3 |
| Combining at recall | Yes, you assemble P, A and O | No: one picture, one lookup |
| Best for | Very long mixed numbers, cards | Speed on long random digits |
The two are often combined: PAO for cards, and a three-digit system for digits. Both rely on the Major System, which you already have.
vowel,
consonant.
one syllable, one picture.
Now you build
Have a go before you open any answer. A rough attempt teaches you more than a perfect model you only read.
Decode these words
Build the syllable
Encode 510 and 244
A syllable that is not a word
Six digits, two pictures
Say the rule
Drill
Flash cards
Say the answer first, then tap the card.
Quick quiz
The memory challenge
Memory challenge: six syllables
These six words stand for 372 914 541 133 107 360. Learn them in order as one story, then type them back. Afterwards decode them into digits.
A mean man; a golf par; a car park; Tim; someone took something; a maze.
The list has gone. Type what you remember, one item per line.
Look back
These reach back to earlier rooms. Answer in your head or out loud, then check.
What I can do now
A thought to keep
Which three-digit numbers matter to you (a house number, an area code)? Encode one now.