MESON Chess Problem Database
Problem Display
PID: 24910 (8/3q4/4Np2/5k2/1Q2p2p/8/7B/6RK w - - 0 1)
Ekholm, Edvin Alexander
Prize, Allas Kronika, 1930
#2
5 + 5
| 5454 | Near Snap | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qa4
- 2.Sd4#
- 2.Sg7#
- 1...Qb5
- 2.Sd4#
- 2.Sg7#
- 1...Qc6
- 2.Sd4#
- 2.Sg7#
- 1...Qc8
- 2.Sd4#
- 2.Sg7#
- 1...Qe8
- 2.Sd4#
- 2.Sg7#
- 1...Qd1
- 2.Sg7#
- 1...Qd2
- 2.Sg7#
- 1...Qd3
- 2.Sg7#
- 1...Qd4
- 2.Sxd4#
- 2.Sg7#
- 1...Qd5
- 2.Sg7#
- 1...Qd6
- 2.Sg7#
- 1...Qb7
- 2.Sd4#
- 1...Qc7
- 2.Sd4#
- 1...Qe7
- 2.Sd4#
- 1...Qf7
- 2.Sd4#
- 1...Qg7
- 2.Sd4#
- 2.Sxg7#
- 1...Qh7
- 2.Sd4#
- 1...Qd8
- 2.Sg7#
- 1...e3
- 2.Qg4#
- 1...Qa4
- Tries
- 1.Qa5+?
- 1...Qb5
- 2.Sd4#
- 2.Sg7#
- 1...Qd5
- 2.Sd4#
- 2.Sg7#
- 2.Qxd5#
- 1...Kxe6!
- 1...Qb5
- 1.Qc5+?
- 1...Qd5
- 2.Sd4#
- 2.Sg7#
- 2.Qxd5#
- 1...Kxe6!
- 1...Qd5
- 1.Qd6?
- threat
- 2.Sd4#
- 1...Qxe6
- 2.Qf4#
- 1...Qxd6
- 2.Sg7#
- 1...Qa4
- 2.Sg7#
- 2.Qd5#
- 1...Qa7
- 2.Qd5#
- 1...e3!
- threat
- 1.Qb3?
- threat
- 2.Qh3#
- 1...Qd1
- 2.Sg7#
- 1...Qd3
- 2.Sg7#
- 1...Qg7
- 2.Sd4#
- 2.Sxg7#
- 2.Qd5#
- 1...h3
- 2.Qxh3#
- 1...e3!
- threat
- 1.Qc4?
- 1...Qxe6
- 2.Qf1#
- 1...Qd5
- 2.Sg7#
- 2.Qxd5#
- 1...Qc6
- 2.Sd4#
- 2.Sg7#
- 1...Qa4
- 2.Sd4#
- 2.Sg7#
- 2.Qd5#
- 1...Qb5
- 2.Sd4#
- 2.Sg7#
- 1...Qc8
- 2.Sd4#
- 2.Sg7#
- 2.Qd5#
- 1...Qe8
- 2.Sd4#
- 2.Sg7#
- 2.Qd5#
- 1...Qd1
- 2.Sg7#
- 1...Qd2
- 2.Sg7#
- 1...Qd3
- 2.Sg7#
- 1...Qd4
- 2.Sxd4#
- 2.Sg7#
- 1...Qd6
- 2.Sg7#
- 1...Qa7
- 2.Qd5#
- 1...Qb7
- 2.Sd4#
- 1...Qc7
- 2.Sd4#
- 1...Qe7
- 2.Sd4#
- 2.Qd5#
- 1...Qf7
- 2.Sd4#
- 2.Qd5#
- 1...Qg7
- 2.Sd4#
- 2.Sxg7#
- 2.Qd5#
- 1...Qh7
- 2.Sd4#
- 2.Qd5#
- 1...Qd8
- 2.Sg7#
- 1...e3
- 2.Qg4#
- 1...h3!
- 1...Qxe6
- 1.Qb5+?
- 1...Qxb5
- 2.Sd4#
- 2.Sg7#
- 1...Qd5
- 2.Sd4#
- 2.Sg7#
- 2.Qxd5#
- 1...Kxe6!
- 1...Qxb5
- 1.Qa5+?
- Keys
- 1.Qe7!
- threat
- 2.Sg7#
- 1...Qxe6
- 2.Qh7#
- 1...Qxe7
- 2.Sd4#
- threat
- 1.Qe7!
This anticipates 96863(1945)
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 11
- Sets
- Q(e);N_GUARD,P_PINR(A)::S(E)
- Q(e);N_GUARD::S(E)
- P(a);OGATE::QAB1(D)
- Tries
- Try
- Q(D);CHECK
- Refutation
- K(c);S_FLIGHT,XS(E)
- Try
- Q(D);CHECK
- Refutation
- K(c);S_FLIGHT,XS(E)
- Try
- Q(D);
- Threat
- S(E)
- Vars
- Q(e);SBLOCK,XS(E)::QAR1(D)
- Q(e);N_GUARD,XQ(D)::S(E)
- Q(e);N_GUARD::QAR2(D)
- Refutation
- P(a);
- Try
- Q(D);
- Threat
- QAB(D)
- Vars
- Q(e);N_GUARD,P_PINR(A)::S(E)
- Q(e);N_GUARD::S(E)
- P(b);::QAB(D),XP(b)
- Refutation
- P(a);
- Try
- Q(D);
- Vars
- Q(e);SBLOCK,XS(E)::QAR(D)
- Q(e);N_GUARD,P_PINR(A)::S(E)
- Q(e);N_GUARD::S(E)
- Q(e);N_GUARD::QAR2(D)
- P(a);OGATE::QAB1(D)
- Refutation
- P(b);
- Try
- Q(D);CHECK
- Refutation
- K(c);S_FLIGHT,XS(E)
- Try
- Actual
- Q(D);
- Threat
- S(E)
- Vars
- Q(e);N_GUARD,SBLOCK,XS(E)::QAB(D)
- Q(e);N_GUARD,XQ(D)::S(E)
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).