MESON Chess Problem Database
Problem Display
PID: 263305 (k1K5/1N4Q1/1P6/8/8/2p5/8/q7 w - - 0 1)
Myhre, Gunnar Frode
Szachy, 1975
#2
4 + 3
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Sets
- 1...c2
- 2.Qxa1#
- 1...c2
- Tries
- 1.Sc5?
- threat
- 2.Qg2#
- 2.Qb7#
- 1...Qb2
- 2.Qa7#
- 2.Qb7#
- 1...Qb1
- 2.Qa7#
- 2.Qb7#
- 1...Qd1
- 2.Qa7#
- 2.Qb7#
- 1...Qe1
- 2.Qa7#
- 2.Qb7#
- 1...Qf1
- 2.Qa7#
- 2.Qb7#
- 1...Qg1
- 2.Qa7#
- 2.Qb7#
- 1...Qh1
- 2.Qa7#
- 1...Qa2
- 2.Qb7#
- 1...Qa4
- 2.Qb7#
- 1...Qa7
- 2.Qxa7#
- 1...Qa6+!
- threat
- 1.Sd6?
- threat
- 2.Qg2#
- 2.Qb7#
- 1...Qb2
- 2.Qa7#
- 2.Qb7#
- 1...Qb1
- 2.Qa7#
- 2.Qb7#
- 1...Qd1
- 2.Qa7#
- 2.Qb7#
- 1...Qe1
- 2.Qa7#
- 2.Qb7#
- 1...Qf1
- 2.Qa7#
- 2.Qb7#
- 1...Qg1
- 2.Qa7#
- 2.Qb7#
- 1...Qh1
- 2.Qa7#
- 1...Qa2
- 2.Qb7#
- 1...Qa4
- 2.Qb7#
- 1...Qa5
- 2.Qb7#
- 1...Qa7
- 2.Qxa7#
- 1...Qa6+!
- threat
- 1.Sd8?
- threat
- 2.Qg2#
- 2.Qb7#
- 1...Qb2
- 2.Qa7#
- 2.Qb7#
- 1...Qb1
- 2.Qa7#
- 2.Qb7#
- 1...Qd1
- 2.Qa7#
- 2.Qb7#
- 1...Qe1
- 2.Qa7#
- 2.Qb7#
- 1...Qf1
- 2.Qa7#
- 2.Qb7#
- 1...Qg1
- 2.Qa7#
- 2.Qb7#
- 1...Qh1
- 2.Qa7#
- 1...Qa2
- 2.Qb7#
- 1...Qa4
- 2.Qb7#
- 1...Qa5
- 2.Qb7#
- 1...Qa7
- 2.Qxa7#
- 1...Qa6+!
- threat
- 1.Sc5?
- Keys
- 1.Sa5!
- threat
- 2.Qg2#
- 2.Qa7#
- 2.Qb7#
- 1...Qxa5
- 2.Qb7#
- 1...Qb2
- 2.Qa7#
- 2.Qb7#
- 1...Qb1
- 2.Qa7#
- 2.Qb7#
- 1...Qd1
- 2.Qa7#
- 2.Qb7#
- 1...Qe1
- 2.Qa7#
- 2.Qb7#
- 1...Qf1
- 2.Qa7#
- 2.Qb7#
- 1...Qg1
- 2.Qa7#
- 2.Qb7#
- 1...Qh1
- 2.Qa7#
- 1...Qa2
- 2.Qa7#
- 2.Qb7#
- 1...Qa4
- 2.Qa7#
- 2.Qb7#
- threat
- 1.Sa5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 1
- Sets
- P(b);OGATE::QAB(C),XQ(a)
- Tries
- Try
- S(B);
- Threat
- DUALS(2)
- Vars
- Q(a);N_GUARD::QAR1(C)
- Q(a);::QAB1(C)
- Q(a);N_GUARD::QAR1(C),XQ(a)
- Refutation
- Q(a);CHECK
- Try
- S(B);
- Threat
- DUALS(2)
- Vars
- Q(a);N_GUARD::QAR1(C)
- Q(a);::QAB1(C)
- Q(a);N_GUARD::QAR1(C),XQ(a)
- Refutation
- Q(a);CHECK
- Try
- S(B);
- Threat
- DUALS(2)
- Vars
- Q(a);N_GUARD::QAR1(C)
- Q(a);::QAB1(C)
- Q(a);N_GUARD::QAR1(C),XQ(a)
- Refutation
- Q(a);CHECK
- Try
- Actual
- S(B);
- Threat
- DUALS(3)
- Vars
- Q(a);XS(B)::QAB1(C)
- Q(a);::QAR1(C)
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).