Questions & Answers about Retrocede una casilla.
It is the affirmative tú command of retroceder.
- retroceder = to move back / to go back
- retrocede = move back / go back / back up
This is the command form you use when speaking directly to one person in an informal way.
Examples:
- Retrocede una casilla. = Move back one space.
- Avanza dos casillas. = Move forward two spaces.
Because retroceder is the infinitive form, meaning to move back or to go back. In this sentence, you are telling someone to do it, so Spanish uses a command form.
Compare:
- retroceder = to move back
- retrocede = move back! / go back!
So Retrocede una casilla is an instruction, like something you might read in a board game.
Spanish often omits subject pronouns when they are understood from the verb form.
So instead of saying:
- Tú retrocede una casilla
Spanish normally just says:
- Retrocede una casilla
The verb already tells you the sentence is directed at tú.
Including tú is possible, but it usually adds emphasis and is not necessary in a normal instruction.