Wipe goban: tournament's etiquette?

I was watching the game live, all of a sudden while dame was being filled it went from 98% white to 98% black… no apparent reason why :stuck_out_tongue:

Is the challenger supposed to [wipe the goban]?

As well as being the challenger in that match, Shibano is also almost twenty years younger than the challengee, Cho U. In fact, Shibano was only nineteen when he took the title.

Perhaps that played a role?

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I don’t think so. I believe it’s just an etiquette thing. Just like Alexander said.

That reminds me that I don’t have a blanket yet!

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I have a hooded velvet cloak. I think I will use it as my “battle garment” from now on.

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The fan (hot) is a bit contradictory with a blanket (cold).

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Maybe it’s a “modest” custom of sorts?