What does - - + or + - - mean in chess results?

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Yaffler

they look like position evaluation symbols, usually found in an ongoing game.

There is a wiki page here.

https://en.wikipedia.org/wiki/Chess_annotation_symbols

Yaffler

oh

JamesColeman

 +-- usually means that Black didn't turn up so white wins by default.. --+ is a black win. 

The_Suffocater02

The side where the plus sign is is the side which won because of opponent not turning up.