MESON Chess Problem Database
Problem Display
PID: 102652 (5nQ1/6q1/2b5/5B1N/8/4Nk1K/3R1P2/2b2R2 w - - 0 1)
Hermanson, Halvar
Le Courrier des Echecs, 1956
#2
8 + 5
| 6490 | yacpdb | 2009 |
| 5454 | Near Snap | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Qa1
- 2.Qg2#
- 2.Qg3#
- 2.Qg4#
- 1...Qb2
- 2.Qg2#
- 2.Qg3#
- 2.Qg4#
- 1...Qc3
- 2.Qg2#
- 2.Qg3#
- 2.Qg4#
- 1...Qd4
- 2.Qg2#
- 2.Qg3#
- 1...Qe5
- 2.Qg2#
- 2.Qg4#
- 1...Qf6
- 2.Qg2#
- 2.Qg3#
- 2.Qg4#
- 1...Qh6
- 2.Qg2#
- 2.Qg3#
- 2.Qg4#
- 1...Qh8
- 2.Qg2#
- 2.Qg3#
- 2.Qg4#
- 1...Qg2+
- 2.Qxg2#
- 1...Qg3+
- 2.Qxg3#
- 1...Qg4+
- 2.Qxg4#
- 1...Qa7
- 2.Qg2#
- 2.Qg3#
- 2.Qg4#
- 1...Qb7
- 2.Qg2#
- 2.Qg3#
- 2.Qg4#
- 1...Qc7
- 2.Qg2#
- 2.Qg4#
- 1...Qd7
- 2.Qg2#
- 2.Qg3#
- 2.Qg4#
- 1...Qe7
- 2.Qg2#
- 2.Qg3#
- 2.Qg4#
- 1...Qf7
- 2.Qg2#
- 2.Qg3#
- 2.Qg4#
- 1...Qh7
- 2.Qg2#
- 2.Qg3#
- 2.Qg4#
- 1...Ba4
- 2.Qd5#
- 1...Bb5
- 2.Qd5#
- 1...Bd5
- 2.Qxd5#
- 1...Bd7
- 2.Qd5#
- 1...Be8
- 2.Qd5#
- 1...Qa1
- Tries
- 1.Sc2?
- threat
- 2.Se1#
- 1...Qg2+
- 2.Qxg2#
- 1...Qg3+
- 2.Qxg3#
- 2.fxg3#
- 1...Qg4+
- 2.Qxg4#
- 1...Qe5
- 2.Qg2#
- 2.Qg4#
- 1...Qe7
- 2.Sd4#
- 2.Qg2#
- 2.Qg3#
- 2.Qg4#
- 1...Bxd2!
- threat
- 1.Sg2?
- threat
- 2.Se1#
- 2.Sh4#
- 1...Qxg2+
- 2.Qxg2#
- 1...Qg3+
- 2.Qxg3#
- 2.fxg3#
- 1...Qg4+
- 2.Qxg4#
- 1...Qd4
- 2.Se1#
- 2.Qg3#
- 1...Qe5
- 2.Sh4#
- 2.Qg4#
- 1...Qf6
- 2.Se1#
- 2.Qg3#
- 2.Qg4#
- 1...Qg5
- 2.Se1#
- 1...Qe7
- 2.Qg3#
- 2.Qg4#
- 1...Sg6
- 2.Se1#
- 1...Bxd2!
- threat
- 1.Sg4?
- threat
- 2.Sh2#
- 1...Qxg4+
- 2.Qxg4#
- 1...Qe5
- 2.Sxe5#
- 1...Qc7
- 2.Qb3#
- 1...Bxd2!
- threat
- 1.Bg4+?
- 1...Qxg4+
- 2.Qxg4#
- 1...Ke4!
- 1...Qxg4+
- 1.Qxg7?
- threat
- 2.Qg2#
- 2.Qg3#
- 2.Qg4#
- 1...Bxd2
- 2.Qg4#
- 1...Sg6!
- threat
- 1.Sc2?
- Keys
- 1.Qb3!
- threat
- 2.Qd1#
- 1...Qg2+
- 2.Sxg2#
- 1...Qg3+
- 2.fxg3#
- 1...Qg4+
- 2.Sxg4#
- 1...Ba4
- 2.Qd5#
- 1...Bb5
- 2.Qd5#
- threat
- 1.Qb3!
This anticipates 45888(1981)
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 0
- REMOVED MATES = 3
- Sets
- Q(d);CHECK,OGATE::QAB1(H),XQ(d)
- Q(d);CHECK,OGATE::QAR1(H),XQ(d)
- B(c);N_GUARD::QAB(H)
- B(c);N_GUARD::QAB(H),XB(c)
- B(c);N_GUARD,P_PINB(F)::QAB(H)
- Tries
- Try
- S(D);
- Threat
- S(D)
- Vars
- Q(d);CHECK,OGATE::QAB1(H),XQ(d)
- Refutation
- B(a);XR(B)
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- Q(d);CHECK,OGATE,XS(D)::QAB1(H),XQ(d)
- Q(d);CHECK,OGATE::QAB1(H),XQ(d)
- Q(d);::S(D)
- S(e);::S(D)
- Refutation
- B(a);XR(B)
- Try
- S(D);
- Threat
- S(D)
- Vars
- Q(d);CHECK,OGATE,XS(D)::QAB1(H),XQ(d)
- Q(d);N_GUARD::S(D),XQ(d)
- Q(d);N_GUARD::QAR(H)
- Refutation
- B(a);XR(B)
- Try
- B(F);CHECK
- Vars
- Q(d);CHECK,OGATE,XB(F)::QAB1(H),XQ(d)
- Refutation
- K(b);S_FLIGHT
- Try
- Q(H);XQ(d)
- Threat
- DUALS(3)
- Vars
- B(a);XR(B)::QAB1(H)
- Refutation
- S(e);
- Try
- Actual
- Q(H);
- Threat
- QAB(H)
- Vars
- Q(d);CHECK,N_GUARD::QAR(H)+S(D),XQ(d)
- Q(d);CHECK,OGATE::R(A)+P(C),XQ(d)
- B(c);N_GUARD::QAB(H)
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).