Arena: how to switch sides?

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Stone2150

Hi all,

I'm a fan of Arena and am currently running a lot of games between Stockfish and Lc0. There is just one thing I've never been able to figure out.

How can you pick which engine is black and which one is white? It's pretty random now. Without changing anything, it may switch in between games for no obvious reason. Or it doesn't. It seems pretty random to me.

And it also switches which engine goes first if you rearrange them. As in, at the bottom, you see the analysis of both engines underneath each other. Sometimes the bottom one starts. Sometimes the top one. And so adjusting that still results in random choice.

Love Arena but would like to know how this is done.

EscherehcsE
Stone2150 wrote:

Hi all,

 

I'm a fan of Arena and am currently running a lot of games between Stockfish and Lc0. There is just one thing I've never been able to figure out.

 

How can you pick which engine is black and which one is white? It's pretty random now. Without changing anything, it may switch in between games for no obvious reason. Or it doesn't. It seems pretty random to me.

 

And it also switches which engine goes first if you rearrange them. As in, at the bottom, you see the analysis of both engines underneath each other. Sometimes the bottom one starts. Sometimes the top one. And so adjusting that still results in random choice.

 

Love Arena but would like to know how this is done.

This isn't anything I ever paid much attention to before. When I have two engines play each other, I set up a tournament. When you're setting up the tournament in the "Engine Tournament" window, I think the engine that's listed first in the Competitors list is the one that starts the first game as White. And, of course, when playing a tournament, you usually have the engines alternate colors every game.

How are you playing the engines against each other? Via a tournament, or some other way, such as a demo game?

BTW, I don't think the order of the engines in the "engine analysis window" has anything to do with which engine plays a particular color.

EscherehcsE

Also, if you *have* been using the demo feature - I think if you open the "Engine Management" window and go to the "Select" tab, the order of the engines in the "loaded engines" list is important. For a demo game, the first engine in the "loaded engines" list will play Black for the first game. (Also, if you use the multiple-game version of the demo feature, the engines will alternate colors for each game.)