MESON Chess Problem Database
Problem Display
PID: 180371 (Q7/3B3p/2P3p1/R2PN1RP/3pkp2/8/5K2/8 w - - 0 1)
Lider, Valentin Viktorovich
Sinfonie Scacchistiche, 1974
#2
9 + 5
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Tries
- 1.Qa6?
- threat
- 2.Qe2#
- 2.Qd3#
- 1...d3
- 2.Qxd3#
- 2.Qc4#
- 1...f3!
- threat
- 1.Qb8?
- 1...gxh5
- 2.Bf5#
- 1...d3
- 2.Qb4#
- 1...f3
- 2.Rg4#
- 1...h6!
- 1...gxh5
- 1.Qf8?
- 1...gxh5
- 2.Qf5#
- 1...d3
- 2.Qb4#
- 1...f3
- 2.Qxf3#
- 1...h6!
- 1...gxh5
- 1.Qg8?
- 1...gxh5
- 2.Qxh7#
- 1...d3
- 2.Ra4#
- 1...h6
- 2.Qxg6#
- 1...f3!
- 1...gxh5
- 1.d6?
- threat
- 2.c7#
- 1...f3
- 2.Rg4#
- 1...d3!
- threat
- 1.c7?
- threat
- 2.d6#
- 1...d3
- 2.Ra4#
- 1...f3!
- threat
- 1.Qa6?
- Keys
- 1.Qe8!
- 1...gxh5
- 2.Bf5#
- 1...d3
- 2.Sf3#
- 1...f3
- 2.Rg4#
- 1...h6
- 2.Qxg6#
- 1...gxh5
- 1.Qe8!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 0
- Sets
- Tries
- Try
- Q(I);
- Threat
- DUALS(2)
- Refutation
- P(c);
- Try
- Q(I);
- Vars
- P(d);N_GUARD,XP(F)::B(H)
- P(a);OGATEB::QAR(I)
- P(c);OGATEB::R(E)
- Refutation
- P(e);
- Try
- Q(I);
- Vars
- P(d);N_GUARD,XP(F)::QAB1(I)
- P(a);OGATEB::QAR(I)
- P(c);OGATE::QAB1(I),XP(c)
- Refutation
- P(e);
- Try
- Q(I);
- Vars
- P(d);OGATEB,XP(F)::QAB(I),XP(e)
- P(a);OGATEB::R(B)
- P(e);N_GUARD::QAB(I),XP(d)
- Refutation
- P(c);
- Try
- P(C);
- Threat
- QAB(I)+P(G)
- Vars
- P(c);OGATEB::R(E)
- Refutation
- P(a);
- Try
- P(G);
- Threat
- QAB(I)+P(C)
- Vars
- P(a);OGATEB::R(B)
- Refutation
- P(c);
- Try
- Actual
- Q(I);
- Vars
- P(d);N_GUARD,XP(F)::B(H)
- P(a);SBLOCK::QAR(I)+S(D)
- P(c);OGATEB::R(E)
- P(e);N_GUARD::QAB(I),XP(d)
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).