MESON Chess Problem Database
Problem Display
PID: 225237 (7B/5p1K/1Q3N2/2P2kpp/1R3P2/1NP5/1q1n4/3B4 w - - 0 1)
Jonsson, Christer
Suomen Shakki, 1973
#2
10 + 6
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...h4
- 2.Bg4#
- 1...h4
- Tries
- 1.Sd5?
- threat
- 2.Se3#
- 2.Se7#
- 2.Qf6#
- 1...Qxc3
- 2.Se7#
- 1...gxf4
- 2.Qf6#
- 1...Sf3
- 2.Se3#
- 1...Sf1
- 2.Se7#
- 2.Qf6#
- 1...Se4
- 2.Sd4#
- 1...f6
- 2.Se3#
- 2.Se7#
- 2.Qxf6#
- 1...Sc4!
- threat
- 1.Qc7?
- threat
- 2.Sd4#
- 2.Qe5#
- 2.Qd7#
- 2.Qc8#
- 1...Ke6
- 2.Sd4#
- 2.Qe5#
- 2.Qd7#
- 1...Qxc3
- 2.Qd7#
- 2.Qc8#
- 1...Qxb3
- 2.Qe5#
- 1...Sxb3
- 2.Qe5#
- 2.Qd7#
- 2.Qc8#
- 1...Sf3
- 2.Qd7#
- 2.Qc8#
- 1...Sc4
- 2.Sd4#
- 1...Se4
- 2.Sd4#
- 2.Qe5#
- 1...gxf4!
- threat
- 1.Qc6?
- threat
- 2.Qd5#
- 2.Qd7#
- 2.Qc8#
- 1...Qxc3
- 2.Qd7#
- 2.Qc8#
- 1...gxf4
- 2.Qd5#
- 1...Sc4
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sf3
- 2.Qe4#
- 2.Qd7#
- 2.Qc8#
- 1...Qxb3!
- threat
- 1.Qb7?
- threat
- 2.Qd5#
- 2.Qc8#
- 2.Qd7#
- 1...Ke6
- 2.Sd4#
- 2.Qd7#
- 1...Qxc3
- 2.Qc8#
- 2.Qd7#
- 1...gxf4
- 2.Qd5#
- 1...Sc4
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sf3
- 2.Qe4#
- 2.Qc8#
- 2.Qd7#
- 1...Qxb3!
- threat
- 1.Qb8?
- threat
- 2.Sd4#
- 2.Qe5#
- 2.Qc8#
- 1...Ke6
- 2.Qe5#
- 1...Qxc3
- 2.Qc8#
- 1...Qxb3
- 2.Qe5#
- 1...Sxb3
- 2.Qe5#
- 2.Qc8#
- 1...Sf3
- 2.Qc8#
- 1...Sc4
- 2.Sd4#
- 1...Se4
- 2.Sd4#
- 2.Qe5#
- 1...gxf4!
- threat
- 1.Sd5?
- Keys
- 1.Qd6!
- threat
- 2.Sd4#
- 2.Qe5#
- 2.Qd5#
- 2.Qd7#
- 1...Qxc3
- 2.Qd7#
- 1...Qxb3
- 2.Qe5#
- 1...Sxb3
- 2.Qe5#
- 2.Qd5#
- 2.Qd7#
- 1...gxf4
- 2.Qd5#
- 1...Sf3
- 2.Qd7#
- 1...Sc4
- 2.Sd4#
- 1...Se4
- 2.Sd4#
- 2.Qe5#
- threat
- 1.Qd6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 1
- Sets
- P(e);N_GUARD::B(A)
- Tries
- Try
- S(H);
- Threat
- DUALS(3)
- Vars
- Q(a);XP(C)::S(H)
- P(d);XP(E)::QAR1(G)
- S(b);::S(H)
- S(b);SBLOCK::S(B)
- Refutation
- S(b);
- Try
- Q(G);
- Threat
- DUALS(4)
- Vars
- Q(a);XS(B)::QAR1(G)
- S(b);::S(B)
- Refutation
- P(d);XP(E)
- Try
- Q(G);
- Threat
- DUALS(3)
- Vars
- P(d);XP(E)::QAR2(G)
- S(b);N_GUARD::QAB1(G)
- S(b);N_GUARD::QAB1(G),XS(b)
- Refutation
- Q(a);XS(B)
- Try
- Q(G);
- Threat
- DUALS(3)
- Vars
- P(d);XP(E)::QAR2(G)
- S(b);N_GUARD::QAB1(G)
- S(b);N_GUARD::QAB1(G),XS(b)
- Refutation
- Q(a);XS(B)
- Try
- Q(G);
- Threat
- DUALS(3)
- Vars
- K(c);S_FLIGHT::QAR1(G)
- Q(a);XP(C)::QAB(G)
- Q(a);XS(B)::QAR1(G)
- S(b);::QAB(G)
- S(b);::S(B)
- Refutation
- P(d);XP(E)
- Try
- Actual
- Q(G);
- Threat
- DUALS(4)
- Vars
- Q(a);XP(C)::QAB(G)
- Q(a);XS(B)::QAR1(G)
- P(d);XP(E)::QAR2(G)
- S(b);::QAB(G)
- S(b);::S(B)
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).