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| (21) Posted by seetharaman kalyan [Monday, Aug 16, 2010 17:17] |
I composed a cross check problem with four checks by the black king starflight. I forgot the position as it was symmetric and was ignored in the tourney I entered. Probably it is anticipated. Anybody know the predecessor?
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| (22) Posted by Michael McDowell [Monday, Aug 16, 2010 17:26] |
I'm fairly sure that starflight cross-checks were shown by P.C.Thomson in The Problemist around 1967, but the problem is not in Meson. Maybe someone who has WinChloe can check.
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| (23) Posted by Hauke Reddmann [Monday, Aug 16, 2010 18:20] |
A request to Udo Degener will resolve such very specific
#2 quests very quickly ;-)
BTW, I dimly recall a crosscheck by Kofman (?) with star+
1 bonus flight. Had a doublecheck key, though (son of ?),
which gave them all.
Hauke
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| (24) Posted by Joost de Heer [Monday, Aug 16, 2010 18:41] |
QUOTE
I'm fairly sure that starflight cross-checks were shown by P.C.Thomson in The Problemist around 1967, but the problem is not in Meson. Maybe someone who has WinChloe can check.
It's not in Winchloe either, but it is in yacpdb: http://dt.dewia.com/yacpdb/?id=172971
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| (25) Posted by Joost de Heer [Monday, Aug 16, 2010 18:52] |
QUOTE
I composed a cross check problem with four checks by the black king starflight. I forgot the position as it was symmetric and was ignored in the tourney I entered. Probably it is anticipated. Anybody know the predecessor?
The following is in WinChloe:
Kalyanasundram Seetharaman
2506 Sinfonie Scacchistiche 49 (Jul 1977)
 (= 13+5 )
With Kh5 on g5, this is by Joseph C.J. Wainwright, St. Louis Globe Democrat, 1914.
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| (26) Posted by seetharaman kalyan [Monday, Aug 16, 2010 20:24]; edited by seetharaman kalyan [10-08-16] |
Thanks Joost for locating my problem. and the anticipation so old, not what i thought !!
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| (27) Posted by Vladimir Tyapkin [Monday, Aug 16, 2010 23:08] |
how about this one? dt.dewia.com/yacpdb/?id=36866
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| (28) Posted by Geoff Foster [Saturday, Sep 18, 2010 10:51] |
An article of mine called "A Cross-Check Matrix" has just appeared in the latest issue of "The Problemist Supplement". The following problem was the first one in the article.
Konstantin Gavrilov, Tidskrift for Schack, 1908
 (= 13+7 )
#2
1.Se2! zugzwang
1...R~+ 2.S6f4
1...Rxd5+ 2.Sg5
1...Re5+ 2.Rf4
1...Rf5+ 2.Re3
1...gxf6,Rxf6 2.Rxf6
1...Kxd5 2.Rc3
1...b3 2.Sc3
There are 4 cross-check variations. The key grants a flight, but takes two other flights. By a remarkable coincidence, in the same issue of "The Problemist" Lu Citeroni quoted a version of this problem in his "Selected Problems" column. The version has a much better key move, because it doesn't take any flights.
 (= 12+6 )
#2
1.Sg3! (2.Rd3)
1...R~+ 2.Sd5
1...Rd6+ 2.Re4
1...Re6+ 2.Rd5
1...Rxf6+ 2.Sc6
1...Kxf6 2.Rg4
1...Qxd7 2.Rxd7
Lu found the above version in the recent Jakov Vladimirov book on Russian twomovers. Does anybody know who composed the version?
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| (29) Posted by Sarah Hornecker [Saturday, Sep 18, 2010 18:42]; edited by Sarah Hornecker [10-09-18] |
http://en.wikipedia.org/w/index.php?title=Marjan_Kovačević&oldid=367365250
There's a nice twomover of Marjan.
EDIT: Oops, had mentioned that already. Instead, here's one of mine.
 (= 6+6 )
Original
Mate in 2
1.Bg5!
And with the same idea but without cross-checks:
 (= 9+6 )
MatPlus 36
Mate in 2
1.Sa7!
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| (30) Posted by Mikalai Sihnevich [Saturday, Sep 18, 2010 21:12] |
QUOTE
Lu found the above version in the recent Jakov Vladimirov book on Russian twomovers. Does anybody know who composed the version?
It's a version of Yakov Valdimirov.
See #162, p.66, The Golden Book of Chess Composition 1850-1913 (by Y.Vladimirov, A.Selivanov)
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| (31) Posted by Hauke Reddmann [Sunday, Sep 19, 2010 19:14] |
On a tangent (but BBS IS tangent :-), did you note
the Umnow in the variant 1...Rxf6 2.Sc6#?
Obvious question: How many Umnows can you have
*on one single field* in several crosscheck variants
1...piece xy->here, 2.X->xy#, 1...piece xy->there, 2.Y->xy#,
and so on. Two I can do with my brain tied on my back
(and a check-provoking key as it should, with 10 pieces),
so everything from three upwards interests me. (Don't
hesitate to use a pawn as piece or X/Y.)
Hauke
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| (32) Posted by Geoff Foster [Monday, Sep 20, 2010 01:00] |
Michael Lipton has made two versions of the Gavrilov problem.
version by Michael Lipton
 (= 8+8 )
1.Sxb5!
version by Michael Lipton
 (= 8+8 )
1.Bxd2!
Both versions save a white knight and three white pawns compared to Vladimirov's version, but that version has a perfect key, while Michael's keys (and Gavrilov's) are bad, though thematic. Given these possibilities, is an even better version than Vladimirov's available?
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| (33) Posted by seetharaman kalyan [Monday, Sep 20, 2010 02:10] |
What is the point of saving units retaining same bad key?
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| (34) Posted by seetharaman kalyan [Thursday, Apr 26, 2012 17:34]; edited by seetharaman kalyan [12-04-26] |
Here is a crosscheck of mine. 2nd Prize, The Hindu , 1982.
 (= 7+4 )
#2. 1.Kxe7! (2.Bb7#). Nothing complicated, but very light. Four cross checks including a change from the set for 1...Qxe5.
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| (35) Posted by Michael McDowell [Thursday, Apr 26, 2012 21:13] |
This reminds me of a problem by Barry Barnes:
2nd Prize Problemas 1973
 (= 7+5 )
Mate in 2
Set
1...Qxc5 2.Qc4
1...Qxe5 2.Qxd1
1.Kxe7 (>2.Bxd4)
1...Qxc5+ 2.Bd6
1...Qxe5+ 2.Se6
1...Qh4+ 2.Bf6
1...Qe3 2.Qc4
1..Qd3 2.Sxd3
1...Re1 2.Qxd4
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| (36) Posted by seetharaman kalyan [Thursday, Apr 26, 2012 23:35] |
The skilled master works in another change! Very nice. But mine has pinmate after the key also :)
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| (37) Posted by Administrator [Wednesday, May 2, 2012 17:10] |
Few days ago I received a nicely produced booklet "The Two-Move Chess Problems of Godfrey Quack" (Keverel Chees Books 1997, ISBN: 0-9531321-0-2), a suprising shipment from the publisher Robert H. Jones. The collection contains 76 problems (75 #2 and one #3), most of which were composed in classic style. Among them is one twomover published in the booklet as original and this is a fitting place to quote it.
Godfrey Quack (1997)
 (= 7+8 )
#2
1.Kb8! ~ 2.Qc7:#, 1... Sc2+,Sd3+,Sd5+,Kc5 2.Bb3,Sb7,Bb5,Sb7#
I can comment it with only one word: beautiful!
Other problems in the booklet are equally enjoyable and the publisher says that he still has a few copies left at price of £3.50 plus postage. If you are interested you can contact him at: jones_r53@sky.com
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| (38) Posted by Sarah Hornecker [Friday, Mar 8, 2013 13:26] |
In re to my posting of 18 September 2010, I must have confused that twomover with another. So the correct source is not "MatPlus 36", but "Original".
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