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Danger, Will Robinson, in both English and German "selfmate" is occasionally used for what problemists correctly term "helpmate". I mean selfmate: a move so idiotic it forces the opponent to mate. (I quickly browsed Krabbe's site, but to no avail.)

So, did a true selfmate ever occur in an (earnest) game? A cross-check mechanism might do the trick most easily.

Hauke Reddmann
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  • This answer by Robert Gamble might help. Robert found such an OTB game between GM Danilo Milanovic and IM Jasmin Bejtovic at the 41st Bosna Open in Sarajevo 2011, by using CQL 6. In the game in question black's last 2 moves are not so much idiotic because mate in a few moves was inevitable either way but the use of the CQL query in the answer is a good idea for finding more such games. – Andreas Tsevas Jun 19 '23 at 17:53
  • I knew it would exist here...and had it been tagged with "selfmate", I also would have found it. (Done!) – Hauke Reddmann Jun 20 '23 at 07:07

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