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) [2K4Q/8/2S5/1k6/3B4/8/P5P1/8]

 (Problem 101) M. Lipton, Second Honorary Mention, “Israel Problemists’ Assn. Tourney”, 1955 (There is set play). Mate in 3, * #3 (4+3) [k1K5/1p2R3/q7/3B4/8/4B3/8/8]

 (Problem 102) H. Lepuschütz, “Deutsche Schachzeitung“, 1936 Mate in 6, #6 (6+15) [2r5/P2R4/K6R/Spk3pp/p2p1p1r/P2p4/1p5b/3bs2s]

 (Problem 103) H. Mattison, First-Second Prize, “Schachmatny Listok”, 1929 White plays and wins, + (4+4) [8/6k1/1PPR4/2r5/7p/7b/3K4/8]

 (Problem 104) E. A. Wirtanen, First Prize, “Leipzig Olympic Tourney”, 1960 (There is set play). Selfmate in 2, * s#2 (11+8) [4S3/3p2S1/1p1P1pP1/1R1bk1Pp/7p/3BK2Q/1r3P2/B7]

 (Problem 105) L. I. Loshinski, First Prize, “Problem”, 1973 Helpmate in 5, h#5 (2+14) [b7/pk4q1/pp1s2r1/1r3p1K/4p3/3p1s1B/4p3/8]

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
6.Rc6#

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).