For the name of this well-known children's card game is this correct ? -

Creach cuid do chomarsan

I don't know this game. (The game is called Beggar my neighbour acc. to Wikipedia)
And I don't understand the English phrase well enough. Ruin your neighbour, make your nb. a beggar an ea?
So, Creach do chomharsan, b'fh. (why "cuid"?)

There's beggar-my-neighbour policy in tearma.ie,
http://www.tearma.ie/Search.aspx?term=B ... -neighbour :

beartas bochtaithe na gcomharsan

So, b'fhéidir, bochtú na gcomharsan ?

The word 'thy' has probably become out of fashion nowadays. The aim of the game is to win all the cards that are in your neighbour's hand - I thought you could use cuid for the amount of cards that he/she has. You win when they don't have any left. You make them 'poorer'.
The verb bochtaigh would be more accurate - so perhaps - bochtú do chomharsan ?

bochtú na gcomharsan ("impoverishment of the neighbours") seems to have some official touch for any beggar-thy-neighbour situations, e.g.
https://eur-lex.europa.eu/LexUriServ/Le ... 083:GA:PDF

But bochtú is a verbal noun, English beggar is used as an imperative, so
Bochtaigh do/mo chomharsan ("Impoverish my/thy neighbour") would be more similar to the English name.

Go raibh maith agat.