Declare the key before the example
A compact notation system saves space only when readers understand its key. One useful convention writes the rank first and a suit letter second: S for spades, H for hearts, D for diamonds and C for clubs. Under this convention, 7H means seven of hearts, QC means queen of clubs and AS means ace of spades. Introduce the key even when the letters seem familiar.
Make the boundaries visible
Write a list as “7H, QC, AS” rather than joining everything together. Commas or separate list items show where one card ends and the next begins. Keep ten as 10 when writing for a general audience; using T is possible, but requires another definition. Uppercase letters make the examples visually consistent. Consistency matters more than choosing an unusually short format.
Preserve meaning in translation
A translated explanation can retain S/H/D/C while describing their meaning in the reader’s language. This lets the same example appear in two language versions without changing its underlying labels. Do not silently switch to another set of letters halfway through a page. If a source uses different notation, translate the example explicitly and explain the difference.
Handle duplicates and unknown cards explicitly
When an exercise uses several physical decks, a label such as “Deck A: 7H” is clearer than two indistinguishable 7H entries. For a face-down card, write “unknown card” unless your key defines a special symbol. Do not use a question mark to mean both an unknown card and an uncertain transcription. A notation key should remove ambiguity rather than create a second puzzle.
Questions and answers
Is S/H/D/C the only valid notation?
No. It is a convention used in these examples. Other sources may use symbols or different abbreviations.
Can I use suit symbols instead of letters?
Yes, but explain them in words too. Their appearance can differ across fonts and devices.
Does this notation describe a score?
No. It identifies cards. Any scoring or ordering system would need a separate explanation.