Mickey and Goofy to solve a chess problem?

[Per Starbäck]

Let's see if you can ID this chess story!

I'm looking for a comic book story published in Germany around 1970
(probably before), where Mickey and Goofy have to solve a chess problem,
but Goofy makes a mistake and that somehow leads to a trapdoor for them. I
don't know more. Does anyone recognize this? (I can't find the story
searching for "chess" in Inducks.)

/Per Starbäck
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