MESON Chess Problem Database
Problem Display
PID: 228159 (k7/1p6/P1N5/5K2/8/8/8/2Q5 w - - 0 1)
Lokker, Miklosh S
Deutsche Schachzeitung, 1969
#2
4 + 2
| 5454 | Near Snap | 2021 |
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Tries
- 1.Qa3?
- threat
- 2.Qf8#
- 1...bxa6
- 2.Qxa6#
- 1...bxc6!
- threat
- 1.Qe3?
- threat
- 2.Qa7#
- 2.Qe8#
- 1...bxa6
- 2.Qa7#
- 1...b6
- 2.Qe8#
- 1...bxc6!
- threat
- 1.Qa1?
- threat
- 2.Qh8#
- 1...bxa6
- 2.Qxa6#
- 1...bxc6!
- threat
- 1.Qg1?
- threat
- 2.Qa7#
- 2.Qg8#
- 1...bxa6
- 2.Qa7#
- 1...b6
- 2.Qg8#
- 1...bxc6!
- threat
- 1.Qc4?
- threat
- 2.Qg8#
- 1...bxa6
- 2.Qxa6#
- 1...bxc6!
- threat
- 1.Qc5?
- threat
- 2.Qa7#
- 2.Qf8#
- 1...bxa6
- 2.Qa7#
- 1...b6
- 2.Qf8#
- 1...bxc6!
- threat
- 1.Qa3?
- Keys
- 1.Qb2!
- threat
- 2.Qh8#
- 2.Qxb7#
- 2.axb7#
- 1...bxa6
- 2.Qb8#
- 1...bxc6
- 2.Qb7#
- 1...b5
- 2.Qh8#
- 1...b6
- 2.Qh8#
- threat
- 1.Qb2!
Anticipated by 77124(1948)
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 0
- Sets
- Tries
- Try
- Q(A);
- Threat
- QAR(A)
- Vars
- P(a);OGATE,P_SPINP(a),XP(C)::QAR2(A),XP(a)
- Refutation
- P(a);XS(D)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- P(a);XP(C)::QAR1(A)
- P(a);::QAR(A)
- Refutation
- P(a);XS(D)
- Try
- Q(A);
- Threat
- QAB1(A)
- Vars
- P(a);OGATE,P_SPINP(a),XP(C)::QAR2(A),XP(a)
- Refutation
- P(a);XS(D)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- P(a);XP(C)::QAR1(A)
- P(a);::QAR(A)
- Refutation
- P(a);XS(D)
- Try
- Q(A);
- Threat
- QAR(A)
- Vars
- P(a);OGATE,XP(C)::QAR2(A),XP(a)
- Refutation
- P(a);XS(D)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- P(a);XP(C)::QAR1(A)
- P(a);::QAR(A)
- Refutation
- P(a);XS(D)
- Try
- Actual
- Q(A);
- Threat
- DUALS(3)
- Vars
- P(a);OGATE,XP(C)::QAR1(A)
- P(a);XS(D)::QAB1(A)
- P(a);::QAB1(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).