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MatPlus.Net Forum Twomovers 6 promotions task
 
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(1) Posted by Hauke Reddmann [Thursday, Mar 6, 2014 13:28]

6 promotions task


http://www.yacpdb.org/?id=32888

Methinks the number of threats can be reduced to at least only two,
but did someone manage only one? (Too lazy myself :-)

Hauke
 
(Read Only)pid=11774
(2) Posted by Frank Richter [Thursday, Mar 6, 2014 14:04]; edited by Frank Richter [14-03-06]

Already done:
S.D.Leites
Shachmaty w SSSR 1946
1st Prize
(= 9+6 )

#2, 9+6

1.e:f7! Zugzwang
Or do you like to have exactly one threat?
 
 
(Read Only)pid=11775
(3) Posted by seetharaman kalyan [Thursday, Mar 6, 2014 18:49]

With a great key and a seventh promotion !
 
 
(Read Only)pid=11776
(4) Posted by Juraj Lörinc [Thursday, Mar 6, 2014 23:42]

It reminds me of the following position, quite heavy and with bad key, but impressive in other way.

Peter Gvozdjak
Pravda 1981
(= 14+10 )
#2 (14+10)

1.Bd6!

See also http://www.rubriky.net/pravda/r1981/pr_1248.php#diagram with link to the solution.
 
   
(Read Only)pid=11778
(5) Posted by Branislav Djurašević [Friday, Mar 7, 2014 11:25]; edited by Branislav Djurašević [14-03-07]

Monumental work when Peter was only 16 years!
 
   
(Read Only)pid=11780
(6) Posted by Hauke Reddmann [Friday, Mar 7, 2014 11:57]

@Frank: Zugzwang is perfectly OK. (I guess 1 threat is
impossible. Of course I have seen this problem before,
I just couldn't recall it. BTW, @Seetharaman, also a
changed mate on Kf8 :-)

Hauke
 
   
(Read Only)pid=11781
(7) Posted by Joost de Heer [Friday, Mar 7, 2014 19:56]

(= 14+9 )

Marcel Segers, The Grantham journal 1931
1.é×d7! [2.d×ç8=C‡]
1…C×d7 2.f×é8=C‡
1…D×d8 2.é×d8=C‡
1…D×d7 2.é8=C‡
1…Fé6 2.b×ç8=C‡
1…T×d8 2.ç×d8=C‡
1…T×b8+ 2.ç×b8=D‡
1…F×b7+ 2.C×b7‡
1…T×ç7 2.D×ç7‡
 
 
(Read Only)pid=11785

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MatPlus.Net Forum Twomovers 6 promotions task