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Turnover. Three ring sizes fit into each other, combining and splitting into different pieces, sometimes taking over your opponent's.[All Comments] [Add Comment or Rating]

Michael Taktikos wrote on Sat, Jun 22 07:55 PM UTC in reply to H. G. Muller from Thu Jun 20 05:49 PM:

Hello HGM,

thanks for implementing this interesting variant in the ID engine. (Indeed so interesting, that I registered here and write my first message now :)

For giving the ID engine a sparring partner, I have implemented it in Zillions (It is the TurnoverEndgame.zrf, beside there is also a TurnoverOpening.zrf with simplified win condition, so that it can look deeper): https://drive.google.com/file/d/1zpwfCtoG-tUYk7CrPDQ6IjfHWhJYzP1E/view?usp=drive_link

To test the game with your start position, you can click on turnoverHGMStartposition.zsg (if Zillions is installed, of course)

Tried to test the zrf (10 sec/move) vs the ID diagram (2.5 ply), the first move was

The move of the Castle (= King) is illegal here. Hope to see a bugfix to test this interesting variant further