MESON Chess Problem Database
Problem Display
PID: 178789 (7Q/7n/5Pr1/6PP/7k/8/3N3K/1b1B2R1 w - - 0 1)
Hjelle, David
3rd HM., Springaren, 1951
#2
8 + 4
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Sxg5
- 2.Rg4#
- 1...Sxf6
- 2.Sf3#
- 1...Sf8
- 2.Sf3#
- 2.Rg4#
- 1...Sxg5
- Tries
- 1.Qxh7?
- threat
- 2.Sf3#
- 2.Rg4#
- 2.hxg6#
- 1...Rxg5
- 2.Sf3#
- 1...Rxf6
- 2.Rg4#
- 1...Rg7
- 2.Sf3#
- 2.Rg4#
- 1...Rg8
- 2.Sf3#
- 2.Rg4#
- 1...Be4
- 2.Rg4#
- 2.hxg6#
- 1...Bf5
- 2.Sf3#
- 2.hxg6#
- 1...Rh6!
- threat
- 1.Qb8?
- threat
- 2.Qg3#
- 2.Qf4#
- 1...Rxf6
- 2.Qg3#
- 1...Sxf6
- 2.Qg3#
- 1...Bf5
- 2.Qg3#
- 1...Rxg5!
- threat
- 1.Qc8?
- threat
- 2.Qh3#
- 2.Qg4#
- 1...Rxg5
- 2.Qh3#
- 1...Sxg5
- 2.Qg4#
- 1...Sxf6
- 2.Qh3#
- 1...Bf5!
- threat
- 1.Qxh7?
- Keys
- 1.Qe8!
- threat
- 2.Qe1#
- 1...Rxg5
- 2.Sf3#
- 1...Rxf6
- 2.Rg4#
- 1...Be4
- 2.Qxe4#
- threat
- 1.Qe8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 2
- Sets
- S(d);XP(E)::R1(B)
- S(d);XP(G)::S(C)
- Tries
- Try
- Q(H);XS(d)
- Threat
- DUALS(3)
- Vars
- R(c);XP(E)::S(C)
- R(c);XP(G)::R1(B)
- Refutation
- R(c);
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- R(c);XP(G)::QAB1(H)
- S(d);XP(G)::QAB1(H)
- B(a);::QAB1(H)
- Refutation
- R(c);XP(E)
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- R(c);XP(E)::QAR1(H)
- S(d);XP(E)::QAR1(H)
- S(d);XP(G)::QAR1(H)
- Refutation
- B(a);
- Try
- Actual
- Q(H);
- Threat
- QAB(H)
- Vars
- R(c);XP(E)::S(C)
- R(c);XP(G)::R1(B)
- B(a);N_GUARD::QAR(H),XB(a)
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).