MESON Chess Problem Database
Problem Display
PID: 246382 (1Q6/2K5/5p2/4RNR1/2P2k2/5P2/6P1/8 w - - 0 1)
Hermanson, Halvar
Europe Echecs, 1959
#2
8 + 2
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Kxe5
- 2.Kd7#
- 1...Kxe5
- Tries
- 1.Ra5?
- threat
- 2.Rg4#
- 1...fxg5
- 2.Kb6#
- 2.Kc6#
- 2.Kb7#
- 2.Kd7#
- 2.Kc8#
- 2.Kd8#
- 1...Kxg5!
- threat
- 1.Rb5?
- threat
- 2.Rg4#
- 1...fxg5
- 2.Kb6#
- 2.Kc6#
- 2.Kb7#
- 2.Kd7#
- 2.Kc8#
- 2.Kd8#
- 1...Kxg5!
- threat
- 1.Rc5?
- threat
- 2.Rg4#
- 1...fxg5
- 2.Kb6#
- 2.Kc6#
- 2.Kb7#
- 2.Kd7#
- 2.Kc8#
- 2.Kd8#
- 1...Kxg5!
- threat
- 1.Rd5?
- threat
- 2.Rg4#
- 1...fxg5
- 2.Kb6#
- 2.Kc6#
- 2.Kb7#
- 2.Kd7#
- 2.Kc8#
- 2.Kd8#
- 1...Kxg5!
- threat
- 1.Rh5?
- threat
- 2.Re4#
- 1...Kxe5
- 2.Kd7#
- 1...fxe5!
- threat
- 1.Qa7?
- threat
- 2.Qe3#
- 1...Kxe5
- 2.Qe3#
- 1...Kxg5!
- threat
- 1.Qb1?
- 1...Kxe5
- 2.Qe4#
- 1...fxe5
- 2.Rg4#
- 2.Qc1#
- 1...fxg5
- 2.Qe4#
- 1...Kxg5!
- 1...Kxe5
- 1.Qb2?
- threat
- 2.Rg4#
- 1...fxe5
- 2.Qc1#
- 2.Qd2#
- 1...fxg5
- 2.Qd4#
- 1...Kxg5!
- threat
- 1.Qb3?
- threat
- 2.Qe3#
- 1...Kxe5
- 2.Qe3#
- 1...Kxg5!
- threat
- 1.Qb6?
- threat
- 2.Qe3#
- 1...Kxe5
- 2.Qe3#
- 2.Qd6#
- 1...Kxg5!
- threat
- 1.Qd8?
- 1...Kxe5
- 2.Qd6#
- 1...fxe5
- 2.Qd2#
- 1...fxg5
- 2.Qd4#
- 1...Kxg5!
- 1...Kxe5
- 1.Qh8?
- 1...Kxg5
- 2.Qh6#
- 1...fxe5
- 2.Qh4#
- 1...fxg5
- 2.Qh2#
- 1...Kxe5!
- 1...Kxg5
- 1.Ra5?
- Keys
- 1.Qf8!
- 1...Kxe5
- 2.Qd6#
- 1...Kxg5
- 2.Qh6#
- 1...fxe5
- 2.Rg4#
- 1...fxg5
- 2.Re4#
- 1...Kxe5
- 1.Qf8!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- K(a);S_FLIGHT,XR(D)::QAB(H)+K(G)
- Tries
- Try
- R(D);
- Threat
- R1(F)
- Refutation
- K(a);S_FLIGHT,XR(F)
- Try
- R(D);
- Threat
- R1(F)
- Refutation
- K(a);S_FLIGHT,XR(F)
- Try
- R(D);
- Threat
- R1(F)
- Refutation
- K(a);S_FLIGHT,XR(F)
- Try
- R(D);
- Threat
- R1(F)
- Refutation
- K(a);S_FLIGHT,XR(F)
- Try
- R(F);
- Threat
- R1(D)
- Vars
- K(a);S_FLIGHT,XR(D)::QAB(H)+K(G)
- Refutation
- P(b);XR(D)
- Try
- Q(H);
- Threat
- QAB1(H)
- Vars
- K(a);S_FLIGHT,XR(D)::QAR2(H)
- Refutation
- K(a);S_FLIGHT,XR(F)
- Try
- Q(H);
- Vars
- K(a);S_FLIGHT,XR(D)::QAR1(H)
- P(b);SBLOCK,XR(F)::QAR1(H)
- Refutation
- K(a);S_FLIGHT,XR(F)
- Try
- Q(H);
- Threat
- R1(F)
- Vars
- P(b);SBLOCK,XR(F)::QAR2(H)
- Refutation
- K(a);S_FLIGHT,XR(F)
- Try
- Q(H);
- Threat
- QAB1(H)
- Vars
- K(a);S_FLIGHT,XR(D)::QAR2(H)
- Refutation
- K(a);S_FLIGHT,XR(F)
- Try
- Q(H);
- Threat
- QAB1(H)
- Refutation
- K(a);S_FLIGHT,XR(F)
- Try
- Q(H);
- Vars
- K(a);OGATEB,S_FLIGHT,XR(D)::QAB1(H)
- P(b);SBLOCK,XR(D)::QAB(H)
- P(b);SBLOCK,XR(F)::QAR2(H)
- Refutation
- K(a);P_SPINP(b),S_FLIGHT,XR(F)
- Try
- Q(H);
- Vars
- K(a);OGATEB,S_FLIGHT,XR(F)::QAB1(H)
- P(b);SBLOCK,XR(D)::QAR2(H)
- P(b);SBLOCK,XR(F)::QAB(H)
- Refutation
- K(a);P_SPINP(b),S_FLIGHT,XR(D)
- Try
- Actual
- Q(H);
- Vars
- K(a);OGATEB,S_FLIGHT,XR(D)::QAB1(H)
- K(a);OGATEB,S_FLIGHT,XR(F)::QAB1(H)
- P(b);SBLOCK,XR(D)::R1(F)
- P(b);SBLOCK,XR(F)::R1(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).