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MatPlus.Net Forum Twomovers 2nd Grade Duals? H. Reddmann, Neue Osnabrücker Zeitung 12.8.2000, #2
 
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(1) Posted by Hauke Reddmann [Wednesday, Nov 22, 2006 13:17]

2nd Grade Duals? H. Reddmann, Neue Osnabrücker Zeitung 12.8.2000, #2


(= 8+10 )

(For more analysis, see my website)
1.Qd6! Sf6?!? 2.S~#


Take any twomover with a threat(s). By common wisdom, anything that does
not parry* the threat(s) doesn't need to be considered, and especially
any such black move that produces multiple mates is not considered dualistic.
* Or at least differentiates, as in the Fleck case.
So far, so good. :-)
Take any twomover with threat(s) AND a random move parry against that threat(s)
which allows other mate(s) which need secundary corrections. In the above problem,
1...S~ 2.Sf5,Sc2#. By Reddmann only wisdom :-), anything that does
not parry* the threat(s) doesn't need to be considered, and especially
any such black move that produces multiple mates...hey, why was 1...Sf6?!?
a reason for a SCHWALBE rejection? Protest! Protest! :-)
* Or at least differentiates, 1...Sb6/Sb4 Java.


Any opinion on the matter is welcome, as long as it is identical to mine :-)

Hauke
 
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MatPlus.Net Forum Twomovers 2nd Grade Duals? H. Reddmann, Neue Osnabrücker Zeitung 12.8.2000, #2