MESON Chess Problem Database
Problem Display
PID: 180249 (5NQ1/5R2/n1p3pr/4p1B1/2KPk3/7B/8/4n3 w - - 0 1)
Lider, Valentin Viktorovich
Schach, 1975
#2
7 + 7
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Rxh3
- 2.Qxg6#
- 1...Rh4
- 2.Qxg6#
- 1...Rh5
- 2.Qxg6#
- 1...Rh7
- 2.Qxg6#
- 1...Rh8
- 2.Qxg6#
- 1...Sc2
- 2.Bg2#
- 1...Sg2
- 2.Bxg2#
- 1...Sd3
- 2.Bg2#
- 1...Rxh3
- Tries
- 1.Bg2+?
- 1...Sf3
- 2.Bxf3#
- 1...Sxg2!
- 1...Sf3
- 1.Qg7?
- threat
- 2.Qxe5#
- 1...exd4
- 2.Qxd4#
- 1...Sd3
- 2.Bg2#
- 1...Sf3!
- threat
- 1.Bg2+?
- Keys
- 1.Sd7!
- 1...Rxh3
- 2.Qxg6#
- 1...exd4
- 2.Qe8#
- 1...Rh4
- 2.Qxg6#
- 1...Rh5
- 2.Qxg6#
- 1...Rh7
- 2.Qxg6#
- 1...Rh8
- 2.Qxg6#
- 1...Sc2
- 2.Bg2#
- 1...Sg2
- 2.Bxg2#
- 1...Sd3
- 2.Bg2#
- 1...Sf3
- 2.Sf6#
- 1...Sb4
- 2.Sc5#
- 1...Sc5
- 2.Sxc5#
- 1...Sc7
- 2.Sc5#
- 1...Sb8
- 2.Sc5#
- 1...c5
- 2.Qa8#
- 1...Rxh3
- 1.Sd7!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 0
- Sets
- R(g);N_GUARD,XB(A)::QAB(G),XP(f)
- R(g);N_GUARD::QAB(G),XP(f)
- S(a);N_GUARD::B(A)
- S(a);N_GUARD::B(A),XS(a)
- Tries
- Try
- B(A);CHECK
- Vars
- S(a);N_GUARD,P_SPINS(a)::B(A),XS(a)
- Refutation
- S(a);XB(A)
- Try
- Q(G);
- Threat
- QAR1(G),XP(c)
- Vars
- P(c);OGATE,XP(C)::QAR1(G),XP(c)
- S(a);N_GUARD::B(A)
- Refutation
- S(a);
- Try
- Actual
- S(F);
- Vars
- R(g);N_GUARD,XB(A)::QAB(G),XP(f)
- P(c);OGATEB,XP(C)::QAR(G)
- R(g);N_GUARD::QAB(G),XP(f)
- S(a);N_GUARD::B(A)
- S(a);N_GUARD::B(A),XS(a)
- S(a);SBLOCK::S(F)
- S(d);N_GUARD::S(F)
- S(d);N_GUARD::S(F),XS(d)
- P(e);OGATEB::QAB(G)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).