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MatPlus.Net Forum General The quickest mutual selfmate in 1
 
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(1) Posted by James Malcom (Rewan Demontay) [Monday, Dec 13, 2021 18:02]

The quickest mutual selfmate in 1


Challenge: Find the quickest game to reach a mutual selfmate in one position.

I bid 13 plies for initialization.

1. f3 f5 2. Kf2 Kf7 3. Kg3 Kg6 4. Kh4 Kh6 5. h3 Qe8 6. Qe1 Qg6 7. Qg3
(= 16+16 )

Qg5+ & QxQ#

If this is the quickest, a proof, whether loose or rigorous, it is also accepted as an answer.
 
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(2) Posted by Arno Tungler [Monday, Dec 13, 2021 18:53]

(= 16+16 )

 
 
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(3) Posted by udo [Tuesday, Dec 14, 2021 00:13]

M. Degenkolbe

1. e3 h5 2. Ke2 g5 3. Kf3 f5 4. Kg3 Sf6 5. Kh3 Se4 6. Dh5+ Th5 #

(= 16+16 )

 
   
(Read Only)pid=21933
(4) Posted by James Malcom (Rewan Demontay) [Tuesday, Dec 14, 2021 01:46]

udo, you misunderstand the task. In your position, only one side can selfmate. My task is to reach a position in which both sides have a s#1.
 
 
(Read Only)pid=21934

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MatPlus.Net Forum General The quickest mutual selfmate in 1