Friday, June 12, 2009

Solving contest 2009-05-31, 8 ESO, category2

We present the problems (of both rounds) of the second category (for junior solvers, easier problems, four per round), from the eighth Solving Contest for Chess Problems organized by the Greek Chess Federation (E.S.O. Elliniki Skakistiki Omospondia), and hosted by the Chess Club of Aegaleo in 31/05/2009.

The problems were selected by Ioannis Garoufalidis.

An award was given for his participation to the young player of C.C. Aegaleo John Katopodis (with 7,5 points in 40 possible).



Problems for solving. (The solutions are at the end of this post).


(Problem 358)
A. Kramer,
Deutsche Tageszeitung, 1922,
Mate in 2.
#2 (6 + 1)
[8/8/8/7K/8/2R3P1/3R2Pk/2Q5]



(Problem 359)
M. Bosch,
Mate in 3.
#3 (4 + 2)
[8/8/8/8/1R3p2/5k2/3k1B2/4S3]



(Problem 360)
V. Nikitin,
Ural Problemist, 2008,
White plays and wins.
+ (2 + 3)
[8/8/7K/1kp4p/4P3/8/8/8]



(Problem 361)
S. Jurisek,
Zadachi Etudi, 2005,
Helpmate in 2 moves. Two solutions.
h#2 2111 (5 + 2)
[3b4/1P2k1SP/8/B7/7K/8/8/8]



(Problem 362)
V. Shumarin,
Zadachi I Etudi, 2005,
Mate in 2.
#2 (5 + 2)
[8/8/Q1p1S3/3k4/3B4/7B/2K5/8]



(Problem 363)
Koblov, Rostislav,
Zadachi I Etudi, 2005,
Mate in 3 moves.
#3 (5 + 2)
[8/8/8/5p2/1Q1K4/8/3SBS2/4k3]



(Problem 364)
Galitsky, Alexander,
Mate in 4 moves.
#4 (4 + 3)
[8/8/4p2p/3kS2K/1Q1P4/8/8/8]



(Problem 365)
A. Zickermann, (version)
Feenschach, 1951,
Selfmate in 3 moves.
s#3 (4 + 3)
[s7/8/3S4/8/7Q/k7/1pB5/1K6]





The solutions of the problems
The points of the solution are shown with bold numbers, a total of five for each correct solution.


(Problem 358) A. Kramer, 1922, #2

We must give a flight to the black King. There are many tries, and the theme is Bristol line opening (the parasitic piece that opens the line is not taking part to the mate).

Tries : [1.Qh1+? Kxh1!], [1.Qg1+? Kxg1!]
Tries : [1.Rd1? / Rd3? / Rd4? / Rd5? / Rd6? / Rd7? / Rd8 Kxg2!]
Tries : [1.Rc2? / Rc4? / Rc5? / Rc6? / Rc7? Kxg3!]

Key : 1.Rc8! (5)
1...Kxg3 2.Qc7#


(Problem 359) M. Bosch, #3

We make a Rook-Bishop battery, we allow the black King to move around, but not for very much...

Tries : [1.Rb1? Kc3!], [1.Rc4? Kd1!]

Key : 1.Bb6! (1)
1...Kxe1 2.Rd4 (1) Kf1 3.Rd1#
1...Kd1 2.Rb1+ (1) Kd2 3.Ba5#
1...Kc3 2.Ba5 (1) Kd2 3.Rb1#
1...Kc1 2.Ba5 (1) Kd1 / Kd2 3.Rb1#


(Problem 360) V. Nikitin, +

If the White is going to win, then obviously the wP must be promoted.

(not 1.Kg6? h4 2.e5 h3 3.e6 h2 4.e7 h1=Q 5.e8=Q Qc6 6.Qxc6 Kxc6 7.Kf5 Kd5 -+)
(not 1.Kxh5? c4 2.e5 c3 3.e6 Kc6 4.Kg6 Kd6 5.Kf6 c2 6.e7 c1=Q 7.e8=Q =)

Key : 1.e5! (1)
1...Kc6 2.Kg6 Kd5 3.Kf5 (1) and now two equivalent variations
3...h4 4.e6 Kd6 5.Kf6 h3 6.e7 h2 7.e8=Q h1=Q 8.Qd8+ Kc6 9.Qa8+ (1.5) +-
3...c4 4.e6 Kd6 5.Kf6 c3 6.e7 c2 7.e8=Q c1=Q 8.Qd8+ Kc6 9.Qc8+ (1.5) +-


(Problem 361) S. Jurisek, h#2 2111

Black plays first and helps White to mate. The solver should imagine where all the pieces must go in order to create the mating net inside the limit of the moves.

Key : 1.Kf6! h8=S 2.Be7 Bc3# (2.5)
Key : 1.Bc7! b8=Q 2.Kd7 Qxc7# (2.5)


(Problem 362) V. Shumarin, #2

Tries : [1.Qd3? / Qa5+? / Qb6? C5!], [1.Qa8? Kc4!], [1.Qxc6+? Kxc6!], [1.Qb7? / Ba1? / Bb2? / Bc3? / Bh8? / Bg7? / Bg4? / Kd2? / Kc3? / Kd3? Kd6!]

Key : 1.Bf6! (5) ( > 2.Qd3# )
1...c5 2.Bg2#


(Problem 363) R. Koblov, #3

Tries : [1.Ke3? F4+!], [1.Qd6? Kxd2!], [1.Kd3? / Qb1+? / Qb3? / Qb5? / Qc4? / Bf1? / Bh5? / Bg4? / Bf3? / Ba6? / Bb5? / Bc4? / Bd3? Kxf2!], [1.Sd1? / Sh1? / Sh3? / Sg4? / Sd3+? / Se4+? Kxe2!]

Key : 1.Qb8! (1) ( > 2.Q(x)f4 K~ 3. Qe3# (1) )
1...Kxd2 2.Qb2+ (1.5) Ke1 3.Sd3#
1...Kxf2 2.Qh2+ (1.5) Ke1 3.Sf3#


(Problem 364) A. Galitsky, #4

Tries : [1.Kxh6? / Kg4? / Qc3? / Qc5+? / Qa4? / Qb6? / Qc4+? Ke4!], [1.Qe1? / Qf8? / Qb7+? Kxd4!], [1.Qb2? Kd6!]

Key : 1.Qd2! (1) (zugzwang situation)
1...Kd6 2.Qa5 Ke7 3.Qa8 (2) Kf6 / Kd6 4.Qf8# / 4.Qd8#
1...Ke4 2.Qf2 Kd5 3.Qh4 (2) Kd6 4.Qd8#


(Problem 365) A. Zickermann, s#3

White plays first and forces Black to achieve mate, leading the black Knight from a8 to c3.

Tries : [1.Sc4+? / Qg3+? / Qh3+? / Qb4+? K(x)b4!], [1.Qc4? / Qd4? Sb6!]

Key : 1.Qe1! (1) (zugzwang situation)
1...Sb6 2.Qa5+ Sa4 3.Qc3+ (2) Sxc3#
1...Sc7 2.Sb5+ Sxb5 3.Qc3+ (2) Sxc3#

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