International Solving Contest 2011 – Solutions











7th International Solving Contest (ISC)

25th January, 2011

Solutions

Round 1:

1) Jac Haring, Interpolis TT 1978

1.Rd-? e4! 1.Re4? c6! 1.Rdxd6? Bc6!

1.Rg4! (5) thr./c6/Bc6/e4/dxc5/d5/g1Q/g1S 2.c6/Se4/cxd6/Rf4/Bxc5/Rf6/Qe2/Qf1#

2) Zigurds Pigits, Perventsva Latvijskoj 1950, 3. Pl.

1.Qf6! thr. 2.Qxg6+ (1) Bf5 3.Qxf5#

1…. Sd4 2.Sf4+ (1) Sc2+ 3.Sed5#

1…. Sef4 2.Sd5+ (1) Se2+/Kxd5 3.S3f4/Ba2#

1…. Bxf6 2.Sd5+ (0,5) Kf5/Kxd5 3.Sxe5/Ba2#

1…. Qxf6 2.Sb4+ (0,5) Kf4 3.Sd5#

1…. Bxe3+ 2.Rxe3+ (0,5) Kd5 3.Ba2#

1…. Se~ 2.Qxc6+ (0,5) Qd5 3.Qxd5#

3) Jurij Gordian, Shakmatnaya Poezja 2000, 1. HM

1.Rc5! dr. 2.Sxd5+ Kf5 3.Rxf6+ (1) Bxf6,Sxf6 4.Se7#

1…. Qb7 2.Rxf6+ Bxf6 3.Sc4+ (1) Kf5 4.e4#, 2…. Sxf6 3.Sg4+ (1) Kf5 4.Sh6#

1…. Ra7 2.Sc2+ Kf5 3.e4+ (1) dxe4 4.Sd4#

1…. Bxd6 2.Sc4+ Kf5 3.Rxd5+ (1) Be5 4.Sd6#

4) Martin Minski, Original for Rochade Europa 2011

1.f8Q d1Q [i] 2.Qg7+ (1) [ii] Kh2 3.Bf2! (2) [iii] Kh1 [iv] 4.Qg4 (1) [v] Qf1
5.Qh4+ Kg2 6.Qg3+ Kh1 7.Sg4 (1) Qg2 [vi] 8. Qh4+ Qh~ 9. QxQ#

[i] 1…. Rh2+ 2. Kg6 d1Q 3. Sxe4+ +-

[ii] 2.Qg8? Kh2 3. Bf2!? Rxf2! 4. Sg4+ Kg2 5. Se3+ Kh1 6. Sxd1 Rh2+ 7. Kg7 Rg2+
=

[iii] 3. Qh6+? Kg2 4. Qg5+ Kh1!; 3. Sg4+ Kh3!; 3.Bb8+ Kh1 4. Qh6+ Kg1 =

[iv] 3…. Rxf2 4. Sg4+ Kg2 5. Se3+ Kh1 6. Sxd1 Rh2+ 7. Kg8 Rg2 8. Sf2+! Kh2
9. Sg4+ +-

[v] 4. Sg4? Qc1 5. Qe5 Rxf2! =

[vi] 7…. Rxf2 8. Sxf2 Qxf2 9. Qxf2 +-

5) Marcel Tribowski, StrateGems 2000, 2.HM

I) 1.f5 Bg4 2.Ke4+ Kg1 3.f4 Kf2 4.Qd4+ Ke2 5. Re5 Bh5 6. Bf5 Bf3# (2,5)

II) 1. Rg5 Bc6 2.Be6 Be8 3.Kf5+ Kh3 4.f6 Kh4 5. Rg4 Kh5 6. Tf4 Bg6# (2,5)

6) Eugene Fomichev, Original for V.Chepizhny-75JT (Orbit)

1.R1d3!

1…. dr. 2.Sxa3+ Qxa3 3.Qb4+ (1) Qxb4#

1…. S~ 2.R3d4+ exd4 3.Rc5+ (1) Rxc5#

1…. Sb5 2.Sxe5+ Rxe5 3.R5d4+ (1) Sxd4#

1…. Sxd5 2.Se3+ Sxe3 3.R3d4+ (1) exd4#

1…. Qxc2 2.Sd2+ Qxd2+ 3.Qb4+ (1) Qxb4#

Round 2:

7) William A. Whyatt, British Chess Fed., 119.TT 1968-69, 2.Pr.

1.Sb6! (5)

thr./Qxd3/Bxd3/dxc5/Rxc5/Sxc5/Kxd3

2.Qxc3/Rgc7/Rgg5/Rd7/Rg4/Rg3/Rd5#

8) Jesper Jespersen, Wurzburg Ty 1895, HM

1.Kg1! thr. 2.Qh6 (1) thr./Rd6/Se6 3.Sb6/Qxd6,Se7/Qh1#

1…. Se6 2.Qd6+ (1) Rxd6 3.Se7#

1.… S~ 2.Qc5+ (1) Ke6 3.Q(x)f5#

1…. c3 2.Qxb3+ (1) Kc6 3.Qc4#

1.… g3 2.Qf6 (0,5) Se6 3.Qf3#

1…. h5 2.Qg6 (0,5) ~ 3.Qe4,Be4,Sb6#

9) Andrzej Lewandowski, Leopold Szwedowski, WCCT 1984-88, 10.Pl.

1.Rf7? Rf6! 1. Bf7? Sf6!

1.Sg3! Qxg3 2.Rf7 Rf6 3.Rhxf6 Bxf7 4.Rf1 (1,5), 3…. B,Sxb6 4.Rxe6+ (1)

1…. hxg3 2.Bf7 Sf6 3.Bxf6 Rxf7 4.Bxe5+ (1,5), 3…. Qh4 4.Bxh4 (1)

10) Alexander Kazantsew, Shakmaty v SSSR 1949

1.d6! Sb5! [i] 2. dxe7 [ii] (1) Ke5 3. e8S! Bh8 4. Kg8 (1) Kxe6 5. Kxh8 Kf7
6. h7! (1) a3 7. Sd6+ Kf8! 8. Sxb5 a2 9. Sd4! [iii] (1) a1R! 10. Se6+ Kf7 11.
Sd8+ Kg6 12. Kg8 Ra8 13. h8S+! Kf6 14. Shf7 (1) =

[i] 1…. Sc4 (?) … 8. Sxc4 a2 9. Se5 a1R 10. Sd7+ Kf7 11. Se5+ Kf6
12. Sd7+ = points for variation [i] max. 3 points

[ii] 2. d7? Sd6+ 3. Kg8 Sb7 -+

[iii] 9. Sc3? a1R! 10. Sb5 Kf7 11. Sc7 Ra7 12. Se8 Rd7 13. Sd6+ Kg6 -+

11) Christopher Jones, Brian Stephenson, Original for ISC 2011

I) 1.Bxh5 dxe6 2.Sxe6 Bxc6 3.Bf4 Be4# (2,5)

II) 1.Sxd7 hxg5 2.Bxg5 Rh4 3.Qe4+ fxe4# (2,5)

12) Frantisek Josef Prokop, Wolfgang Pauly MT 1938-39, 4. Pr.

1.Rd4!

1…. Ke3 2.Sc2+ Kf3 3.Be1 f4 4.Rg3+ fxg3 5.Rxe4 (2,5) g2#

1…. f4 2.Bxe2+ Ke3 3.Qc1+ Sd2+ 4.Ke1 f3 5.Bd1 (2,5) f2#

Problems

 



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