Thursday, June 26, 2008

Solving contest 1984-02-05, Patras

We present here the problems of an old solving contest. This event was held 05-Feb-1984 at the "S.O.Patron, Chess Club of Patras" with problem selection by Mr Manolas Emmanuel.
The winners, who had solved all the problems, were the following :
(1) Pountzas Chrysanthos, 53 minutes,
(2) Gerogiannis Christodoulos, 1 hour and 9 minutes
(3) Skoularikis Fotios, 1 hour and 17 minutes.

Try to solve the problems without seeing the analytical explanations in the end of this post. If your time is under one hour and a half, then you may consider yourself as very good solver.

(Problem 100)
N. Kossolapov
“Novosty”, 1963
Mate in 2,
#2 (6+1)

(Problem 101)
M. Lipton,
Second Honorary Mention, “Israel Problemists’ Assn. Tourney”, 1955
(There is set play). Mate in 3,
* #3 (4+3)

(Problem 102)
H. Lepuschütz,
“Deutsche Schachzeitung“, 1936
Mate in 6,
#6 (6+15)

(Problem 103)
H. Mattison,
First-Second Prize, “Schachmatny Listok”, 1929
White plays and wins,
+ (4+4)

(Problem 104)
E. A. Wirtanen,
First Prize, “Leipzig Olympic Tourney”, 1960
(There is set play). Selfmate in 2,
* s#2 (11+8)

(Problem 105)
L. I. Loshinski,
First Prize, “Problem”, 1973
Helpmate in 5,
h#5 (2+14)

Solutions of the problems

Problem-100, Kossolapov, #2
Phases of virtual play : Tries : {1.Qe5+? / Qh5+? / Qd8? Kc4!}, {1.Qg8? Kxc6!}, {1.Qf8?, if 1...Ka4 / Ka6 / Kc6 then 2.Qb4 / Qf1 / Qc5, but 1...Kc4!}.
Phase of actual play : Key : 1.Qh3!
1...Ka4 / Ka6 / Kc6 / Kc4 2.Qb3 / Qd3 / Qd7 / Qb3

Theme X-flights of bK. Three changed mates.

Problem-101, Lipton, * #3
Phase of set play : (*) 1...Qc4 / Qe6 / Qc6 2.BxQ (grabbing).
Phases of virtual play : Tries : {1.Re4? Qc4!}, {1.Re8?, if 1...Qc4 / Qe6 2 Kd7 / Kc7, but 1...Qb6!} (royal battery).
Phase of actual play : Key : 1.Rb7! Qc4 / Qe6 / Qc6 2.Rc7 / Rd7 / Rc7

The composer presents here the theme Brede in a Zagoruiko frame.

Theme Brede cross-checks : Every black check is answered with white check that pins the white piece, which then is unpinned and delivers mate.

Problem-102, Lepuschütz, #6
Phases of virtual play : Tries : {1.Rd5+ Kxd5!}, {1.a8=Q/R? Rxa8+!}, {1.Rc6+? Rxc6+!}, {1.Sb7+? Kc4!}, {1.Rb6? b1=Q/R!}, {1.Rd6? Bf3!}, {1.Re6? f3!}, {1.Rf6? Bg4!}.
Phase of actual play : Key : 1.Rg6! Rg4
2.Rf6 Sg3
3.Re6 Sf3
4.Rd6 Bb3
5.Rb6 Rb8

Problem-103, Mattison, +
Key : 1.b7! Rb5
2.Rd8 Bg2
3.b8=Q Rb8
4.c7! Rb2
5.Kc1! Rb6
6.Rg8 Kh6
7.Rg2 Rc6
8.Rc2 (+–)

Problem-104, Wirtanen, * s#2
Phase of set play : (*)
1...f5 2.f3 f4#
1...g5 2.f4 gxf4#
Phase of actual play : Key : 1.Qh4!
1...f5 2.Qh5 f4#
1...g5 2.Qf4 gxf4#

We see two changed mates here.

Problem-105, Loshinski, h#5
Obviously the mate is given by the wB. Where can the bK be cornered?
Key : 1.a5! Bg4
2.Ka6 Bf5
3.Bd5 Be6
4.Sf5 Bd7
5.Bf7 Bc8#

(This post in Greek language).

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