Major League

The major system maps each digit to consonant sounds, so any number can become a memorable word and any word can be read back as a number. Each timed challenge asks you to either encode a string of digits into a word, or decode a word into its number, across themes like phone numbers, dates and pi.

• A legend shows which consonant sounds map to each digit
• Encode: coin a word whose consonant sounds spell the digits
• Decode: read a word's consonants back into its number
• Daily is a shared round; Practice generates a new one

• Desktop: type your word or number and press Enter or click Submit
• Phone & tablet: tap the field to type your answer, then tap Submit

• Lean on the legend until the digit-to-sound pairings become automatic
• Vowels are free, only the consonant sounds carry the digits
• Faster correct answers score more, so trust the mappings once they click

Major League turns the major system into a timed encode-and-decode mnemonics challenge for memorizing numbers.

• Skills: mnemonics, the major system, memorizing numbers
• Best for: roughly grades 6–12 (and adults)
• For parents & teachers: memorizing numbers with mnemonics.

Turning digits into consonant sounds so that any number becomes a word is the mnemonic major system, also called Hérigone's system — one notable explanation of it appeared in Martin Gardner's Mathematical Puzzles and Diversions.

Encoding and decoding in the same session, against a clock, is the original framing.

The system exists because images are remembered more easily than numbers, and it is genuinely reversible — which is why drilling both directions matters. Being able to turn 3141 into a word is useless if you cannot read the word back, and the two skills are not the same.

Major League is a mnemonics trainer that turns the major system into a timed encode-and-decode challenge. It's an original, free browser game made for PlayPendium.

A free, original browser game on PlayPendium. No download, no install.