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MatPlus.Net Forum Twomovers Queen-Pawn grimshaw
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(1) Posted by seetharaman kalyan [Wednesday, Aug 29, 2012 21:43]

Queen-Pawn grimshaw

Does anybody know an example of Queen-pawn grimshaw (mutual interference) shown in a twomover ? Obviously it can be shown only as White tries in the twomover. If the black queen is pinned it can of course interfere with pawn while defending, but I am ignoring that as in that case there is no difference between a pinned rook and queen.

I recently published a problem of mine in The Problemist not believing it can be original. However a search in the Winchloe database did not produce any predecessor. I am surprised.

There was one example showing mutual interference of a white rook and pawn but I believe it is a little easier.
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(2) Posted by Georgy Evseev [Wednesday, Aug 29, 2012 21:58]

See WinChloe ID 90647

Zadachi i Etyudy 1928
1 Prize
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(3) Posted by Hauke Reddmann [Thursday, Aug 30, 2012 14:12]

Send pics. :-)

BTW, what about a case when the queen is pinned only in the mating move -
Bh1 Rg2 - Kc6 Qf6 Bd7, 1.Rh6+? d5, 1...Qd6 2.Rh6#.
Or Bg6 Rh6 instead, same effect. Do you discard this also as a queen
which "really" is a rook?

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(4) Posted by Juraj Lörinc [Thursday, Aug 30, 2012 14:29]

Here is the link to Kubbel's problem on-line:
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(5) Posted by seetharaman kalyan [Friday, Aug 31, 2012 04:49]; edited by seetharaman kalyan [12-08-31]

Thanks George and Juraj. Kubbel's is a nice predecessor. My problem (a diff. scheme) still survives :) (Note the three changed mates after 1...d5)

K.Seetharaman, Problemist Suppl. Jan 2012.
(= 9+8 )
1. Qf3? g:h! 1.f3?Kd5 2.f4# 1...d3! 1. Qa8!
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(6) Posted by seetharaman kalyan [Friday, Aug 31, 2012 04:57]

Pawn does not seem to interfere with queen in your scheme !
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(7) Posted by Hauke Reddmann [Friday, Aug 31, 2012 18:12]

It wasn't clear enough for me it was a *White* grimshaw :-)
(Since I have a chess game this evening, I won't construct a
working Black example, which would be anticipated anyway :-)

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(8) Posted by seetharaman kalyan [Friday, Aug 31, 2012 20:28]


A working example for black (mutual interference of black queen and BP) is of course impossible without pinning the queen on the mating move.
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MatPlus.Net Forum Twomovers Queen-Pawn grimshaw