Memorize the Mnemonica Stack
52 cards, one fixed order, zero flashcards required to carry around. This trainer turns each position into a vivid, absurd little scene so your brain keeps it — then drills you until recall is instant.
How this works
Every position 1–52 gets a peg word (a concrete noun tied to that number). Every card gets a shape image for its rank (2 curves like a swan, 8 stacks like a snowman) combined with an image for its suit (clover, diamond, heart, shovel). Position + rank + suit combine into one weird little sentence — e.g. "Near the Tie, a Sailboat is nibbling on a Clover" for 1 → 4♣. Weird and specific beats plain and forgettable — that's the whole trick.
- Learn — walk through all 52 positions in order, 10 at a time, with the mnemonic sentence and a flip-to-test flashcard.
- Stack Map — the full poster view for quick scanning and lookup.
- Practice — six drill modes: position→card, card→position, next-card chaining, previous-card, missing-card fill-ins, and a full speed run.
- Stats — per-card mastery heatmap so you know exactly which of the 52 are still shaky.
Learn the Stack
Click the card to flip it and test yourself, or just read the mnemonic and move on. Use ← → to navigate.
The peg words are decodable, not random
Each peg word comes from the Major System: every digit 0-9 is assigned a consonant sound (vowels are just filler to make a real word). Read a peg word's consonant sounds in order and you get the position number straight back out — so instead of memorizing 52 arbitrary words, you're learning one small table.
Example: position 17 → digits 1, 7 → sounds T, K → the word Tack. Position 2 → digit 2 → sound N → Noah. Position 30 → digits 3, 0 → sounds M, S → Mouse. Every peg word below in Learn shows its own breakdown so the pattern sinks in as you go.
Stack Map
Full poster view of all 52 positions. Search a card or a position to jump straight to it.
Practice
Pick a drill. Your accuracy per card is tracked automatically in Stats.
Position → Card
Given a position number, name the card.
Card → Position
Given a card, type its position number.
Next Card
Given a card, name the card that follows it in the stack.
Previous Card
Given a card, name the card right before it.
Fill the Gap
A run of 5 cards with one missing — supply it.
Full Speed Run
All 52 positions in order, against the clock.
Your Progress
Mastery per card, based on Practice drill accuracy. Green = solid, red = needs work, gray = untested.