Some say stubborness is a virtue.

Some say stubborness is a virtue in chess. The ability to dig in, to sustain the fight.....

Lets define the word.

This is the ability to stay dogged in the face of all. The "all" defines this word. The stubborn will hold to their points of view despite all reasoning, despite evidence on the board telling them they are wrong. The conclusion is reached before the evidence, before reasoning...

In chess we need to examine evidence, do careful evaluation before deciding strategy. We also need to be constantly on the lookout for new evidence that may impact on strategy. And then we need to be decisive and within the timeframe allocated.

In short stubborness has no direction. It cannot lead the way to victory.

In my mind stubborness is a liability. Not an asset. We need a strong fighting spirit in line with reasoning.