12th International Solving Contest 24 January 2016 Category 1 Round 1 Problems Time 2 hours N 1 9-+n+-+-+0 9+-vl-+-+-0 9-+q+-+-+0 9+-+-+-+R0 9-wQlvLkzP-+0 9+N+RzP-+-0 9-+L+-+P+0 9+nsN-+K+-0 #2 11+6 N 3 9-+-+-snq+0 9+pzp-+-+-0 9-+R+p+-tr0 9+PsN-mkp+r0 9pzp-sN-+-vL0 9+-+QzP-+-0 9K+-zpl+-sn0 9+-+-+-vlL0 #4 9+15 N 5 9Nmk-+-+-+0 9+-+-+p+-0 9-+-zp-+-+0 9-+-+p+-+0 9zp-+-+-zP-0 9P+-sn-zpp+0 9mK-+-+Nwq-0 H#5 b)kb8 d8 5+9 N 2 9K+-+-+l+0 9Q+-+-+-+0 9+-+kvL-+-0 9-+-+p+N+0 9+p+r+-+p0 9-zP-+N+Ptr0 9+-+-+n+-0 #3 7+8 N 4 9+-+-zp-zp-0 9pmkp+-+P+0 9tr-sNp+-+-0 9P+p+-+-+0 9mK-+-+-+-0 9P+-+-+-+0 9+-vL-+-+-0 + 6+8 N 6 9-mk-+-+-+0 9zpP+-vLR+n0 9-+-+-zp-+0 9+-+N+Lvl-0 9QsN-+-+-zp0 9zp-+-+-+-0 9P+-trp+-+0 9+RmKltr-+-0 S#3 10+11
12th International Solving Contest 24 January 2016 Category 1 Round 2 Problems Time 2 hours N 7 9QsnlsnL+K+0 9vlPzPP+N+-0 9RzPk+p+p+0 9+r+-+-wq-0 9PzpP+-+-+0 9+R+-+-+-0 9N+-+-+-vL0 #2 14+10 N 9 9+-zp-zp-+-0 9-+P+P+-+0 9+-tR-+-+-0 9zPL+p+-+-0 9Pzp-zPp+-+0 9vlk+-mK-+-0 #8 8+7 N 11 9-+l+-+-+0 9wq-+p+-zp-0 9-+R+-+p+0 9+-zpNvl-+-0 9-+-zpk+-+0 9+-+n+-+p0 9p+-+P+-+0 9tr-+-sn-+K0 H#3 2 sol. 4+14 N 8 9vlrzp-+N+-0 9-+nzPp+P+0 9+-zPr+-+-0 9-zpLsNk+-+0 9+-+-+R+-0 9p+-+-+K+0 9wQl+-+-+n0 #3 9+11 N 10 9-+-+-+-tR0 9+-+-+-+p0 9-+-sNPmk-tr0 9+-+r+-+-0 9-vL-+-+-+0 9+K+-+-+-0 + 5+4 N 12 9+-+R+-+-0 9-+-+p+-+0 9+-+-vL-+-0 9-+L+-+-+0 9+p+ptRK+-0 9-sNp+-+-+0 9sn-sN-+kvlQ0 S#7 8+7
12th International Solving Contest 24 January 2016 Category 2 Round 1 Problems Time 2 hours N 1 9-+K+Nvl-+0 9+-+-+-+Q0 9-+-zP-zp-+0 9+-+R+r+p0 9-+-+k+-wq0 9+-+R+-+l0 9-+-zPNzpp+0 #2 8+9 N 3 9-+-+-+R+0 9+p+-+p+-0 9-mK-+-mkNzp0 9+-zp-zp-+-0 9-+-+P+-zP0 9+-zP-+-+-0 9-+p+-+-+0 + 6+7 N 2 9-+-mK-+-+0 9+-+L+-+-0 9N+pmk-+-+0 9+-tR-+-sN-0 9r+-+-+-+0 9+-+-+-vl-0 9l+-+-+-+0 9+-wQ-+n+-0 #2 6+6 N 4 9k+-+-+-+0 9zP-zpp+-+-0 9-+-sN-zp-+0 9tR-+-+P+-0 9-+p+-+-+0 9+-zp-vL-zp-0 9-+P+Pzprzp0 9+R+-+K+L0 S#2 10+10
12th International Solving Contest 24 January 2016 Category 2 Round 2 Problems Time 2 hours N 5 9K+-tR-+-+0 9+-zp-+Q+p0 9-+-+-+-vl0 9+-vLPsN-+-0 9-+-+k+-+0 9+ptR-zpN+-0 9-+-+-+n+0 9+-snL+l+-0 #2 9+9 N 7 9-+N+-+-+0 9+P+-+-+-0 9-+-+k+-+0 9+-zP-+-mK-0 9-zP-+-+-+0 9+pzP-+p+-0 9-+-+-+-wQ0 9+-+-+-+n0 #3 7+4 N 6 9lsN-+-+-+0 9tr-+R+-+-0 9-+-zp-+-+0 9+-+LmkpmKn0 9n+P+-+-+0 9+-zP-vLQ+-0 9-+-sN-+-+0 9wq-+-+rvl-0 #2 9+10 N 8 9-tr-+-+-+0 9+-+n+k+-0 9-+p+-sN-+0 9vlPvL-+-+N0 9-+K+-+-+0 9+L+P+n+-0 9-+Ptr-+-+0 9wq-+-+-+-0 H#2 5 sol. 8+8
12th International Solving Contest 24 January 2016 Category 3 Problems Time 2 hours N 1 9-+Q+-sn-+0 9+p+-+-+-0 9+KvlkzP-+-0 9+-+-+P+p0 9-+-+N+-vL0 #2 6+5 N 3 9-+-+-+Q+0 9+-zpkzp-+-0 9-+-+-+-mK0 9+-tR-zP-+-0 #3 4+3 N 5 9-+-+-+lvl0 9+p+-+p+-0 9p+-+-+-+0 9+p+-+-zp-0 9sN-+-zp-+-0 9-+-+Q+-+0 9mk-mK-+-+-0 #4 3+9 N 2 9-vLn+Q+-mK0 9-+-+-zp-+0 9+-+p+k+-0 9-+-+NzP-zp0 9+-+N+p+l0 9r+-+-+-+0 9+L+-+-+-0 #2 7+8 N 4 9-mK-+-+-+0 9+-tR-zp-+-0 9+N+-+-vL-0 9-+-zP-+p+0 9+L+k+-+l0 #3 6+4 N 6 9-+-sN-+-+0 9+-zp-+-+-0 9+-+q+-+-0 9-+-mk-+-+0 9-+-zPKzP-+0 9tR-+-+-+-0 + 5+3
12th International Solving Contest 2016 Category 1 Round 1 Solutions 1. Marjan Kovacević, Original for ISC, 2016 1. b7!...5,0 2. Godfrey Heathcote, 1st prize Natal Mercury, 1918 1. b8! > 2. e5...1,0 1... d1 2. a7...1,0 1...e3 2. c8...1,0 1... c5 2. a5+...1,0 1... c3 2. f6+...0,5 1... d4 2. c3+, 2. a7...0,5 3. Gerard Smits, 2nd honourable mention Probleemblad, 1983 1. e7! > 2. e4+ fxe4 3. d3+...0,5 1... g4 2. xf5+ ~ 3. d3+...0,5 1...b6 2. d7+ xd7 3. c5+...1,0 1... f3 2. xf3+ xf3 3. d4+...1,0 1... g2 2. xe6+ xe6 3. c6+, 2... xe6 3. f3+... 0,5 + 0,5 1...b3+ 2. dxb3 ~ 3. c3+, 2...axb3+ 3. xb3... 0,5 + 0,5 4. Martin Minski, Original for Suomen Tehtäväniekat, 2016 1. h6...1,0 1... xc5 2. xg7 d6 3. b4 c5 4. d4...1,0 4...a5+ 5. c3...1,0 5... e6 6.a3...2,0 6... f5 7.g7+- 1. b2? c3! 2. d7+ c7 3. xc3 xd7 4. xa5 e5=; 1. d7+? c7=; 1. e6? d4!= 1... xc5 2. xg7 c3 3. d4 c2 4. xc5+ xc5 5. b2+- 2...d4 3. h6+- 3...c3 4. xa5 e5 5. f6 c2 6. g5 e6 7. b4 e4 8. c5 4. e5+? xe5 5.g7 c3! 6.g8 c4+ 7. b3 c2= 4...e5 5. xc5+ e6 6. d6!+- 5. a3? e6! 6. xc5 f6 7. b6 xg6 8. xa5 f5/ f6/ f7 9. d8 e6 10.a5 d7 11.a6 c8= 6. xc5? f6=; 6. c2? c3! 7. xc5 f6= 5. Temur Chkhetiani, The Problemist, 1997 a) 1. h1 c7 2.g1 xd2 3.f1 xe4 4. a7 xd6 5. a8 a6#...2,5 b) 1. b1 g4 2.gxf1 g5 3. c1 g6 4. c7 gxf7 5. d7 f8 #...2,5 6. Richard Dunn, The Problemist, 1998 1. c7! >2. e8+ xb7/ xc7 3. ba6+/3. d5+... 0,5 + 0,5 1... e3 2. c6+ xc7 3. f8+ ( d7#)...1,0 1...a5, a6 2. ba6+ a7 3. d4+ ( xd4#)...1,0 1... xb7 2. b5+ xc7 3. d5+ ( xd5#)...1,0 1... xc7 2. c6+ b8 3. d6+ ( xd6#)...1,0
12th International Solving Contest 2016 Category 1 Round 2 Solutions 7. Peter Gvozdjak, Pravda, 1981 1. d6!...5,0 8. Claude Goumondy, Freie Presse, 1983 1. b3! > 2. f6...1,0 1... g3 2. g5+...1,0 1... f2 2. d2+...1,0 1... d4 2. xd4+...0,5 1... e7 2. d3+...0,5 1... xc5 2. d4+...0,5 1...cxd6 2. e5+...0,5 9. Aleksandr Postnikov, 2nd commendation Buletin Problemistic, 1996 1997 1. c4 c2, c1 2. d5+ b1 3. c4 xa2 4. a4+ b1 5. a5 c2, c1 6. c5+ b1 7. c4...5,0 10. Dmitry Petrov, 1st honourable mention Leninska Smena, 1966 1.e7...1,0 1... xe7 2. f5+...1,0 2... f6 3. xh6 g7 4. g4...1,0 4... d3+ 5. c4 g3 6. g8+...1,0 6... xg8 7. h6+ h8 8. c5...1,0 8... g7 9. d6 g6 10. e5+ g7 11. f5 +- 10. Christopher Jones, Original for ISC, 2016 I) 1.c4 e3 2.dxe3 b6 3. d4 xc4#...2,5 II) 1. f4 xg6 2.d3 exd3+ 3. f5 e7#...2,5 12. Irwin Stein, The Problemist, 2001 1. e4 f2 2. f3+ e1 3. c3+ d2 4. xd2 e5 5. xb3 xb3 6. xc2+ d2+ 7. d3 (e4#)...5,0
12th International Solving Contest 2016 Category 2 Round 1 Solutions 1. Arnoldo Ellerman, 3rd prize American Chess Bulletin, 1921 1. d7!...5,0 2. Dieter Hanslik, 3rd commendation Freie Presse, 1976 1. f5!...5,0 3. Abram Ravimovich Kofman, 2nd prize Shakhist, 1937 1. e7...1,0 1...c1 2. d5+ e6 3. c7...1,0 3...f5 4. f8...1,0 4...fxe4 5.c4...1,0 5... xc4 6. f6+...1,0 6... xd5 7. d6# 1. f4? exf4 2. g1 f3 4. Alexander Gulaev, 1st prize Problem, 1977 1978 1. b4! (-)...2,0 1...cxd6 2. d5 ( g1#)...1,0 1...c5 2. b7 ( g1#)...1,0 1...c6 2. c5 ( g1#)...1,0
12th International Solving Contest 2016 Category 2 Round 2 Solutions 5. Arnoldo Ellerman, 1st prize Magasinet, 1950/1 1. c6!...5,0 6. Andreas Schönholzer, 1st prize Schach-Echo, 1969 1. b7!...5,0 7. Leonid Makaronez, Freie Presse, 2009 1. h5!...2,0 >2. e8+...1,0 1... d7 2. f7+...1,0 1... d5 2. xf3+...1,0 8. John Rice, 4th honourable mention Probleemblad, 1999 I) 1. g1 b4 2. g6 c3#...1,0 II) 1. g8 bxc6 2. g6 b5#...1,0 III) 1. g2 d4 2. g6 d3#...1,0 IV) 1. f8 d6 2. g6 c5#...1,0 V) 1. h4 c3 2. g6 d4#...1,0
12th International Solving Contest 2016 Category 3 Solutions 1. Charles Promislo, 3rd prize American Chess Congress Meredith Tourney, 1921 1. f5!...5,0 2. Herbert Ahues, 1st commendation Main Post, 1962 1. ec5!...5,0 3. Alexander Gulaev, special prize Simov MT, 1994 1. b5! (-)...1,0 1...c5 2. b7+...2,0 1...e6 2. f7+...2,0 4. Bruno Sommer, Die Schwalbe, 1961 1. f5! 1...g1 2. g4+...1,0 1...g1 2. d3...2,0 1... e2 2. xe5+...2,0 5. Manfred Zucker, Schach, 1959 1. g2!...1,0 (> 2. c2+ a2 3. d5#) 1...f5 2. c2 a2 3. c3+...3,0 1... h7 2. c2+ xc2 3. xc2+...1,0 6. Bernhard Horwitz, The Chess Player s Chronicle, 1850 1. a4+...1,0 1... e5 2. a5...1,0 2...c5 3. xc5...1,0 3... xc5 4.d4+...1,0 4... xd4 5. c6+ e4 6. xd4 xd4 7. f3...0,5 4... xd4 5. e6+ e4 6. xd4 xd4 7. f3...0,5 1... c5 2. a5+ 2... xa5 3. c6+