MESON Chess Problem Database
Problem Display
PID: 90556 (6q1/2p1R2p/p1N2k1B/K1P5/P7/2P1N3/2B2P2/1Q6 w - - 0 1)
Buerke, Paul
Die Schwalbe, 1968
#2
11 + 5
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qa2
- 2.Sg4#
- 1...Qb3
- 2.Sg4#
- 1...Qd5
- 2.Sg4#
- 2.Sxd5#
- 1...Qf7
- 2.Sg4#
- 1...Qg1
- 2.Sd5#
- 1...Qg3
- 2.Sd5#
- 1...Qg4
- 2.Sxg4#
- 2.Sd5#
- 1...Qg6
- 2.Sd5#
- 1...Qg7
- 2.Sd5#
- 1...Qa8
- 2.Sg4#
- 2.Sd5#
- 1...Qb8
- 2.Sg4#
- 2.Sd5#
- 1...Qc8
- 2.Sd5#
- 1...Qd8
- 2.Sg4#
- 1...Qe8
- 2.Sg4#
- 2.Sd5#
- 1...Qf8
- 2.Sg4#
- 2.Sd5#
- 1...Qh8
- 2.Sg4#
- 2.Sd5#
- 1...Qa2
- Tries
- 1.Bb3?
- threat
- 2.Qf5#
- 1...Qd5
- 2.Sg4#
- 2.Sxd5#
- 1...Qg4
- 2.Sxg4#
- 2.Sd5#
- 2.Rf7#
- 1...Qg5
- 2.Rf7#
- 1...Qg6
- 2.Sd5#
- 1...Qc8
- 2.Sd5#
- 2.Rf7#
- 1...Qe6!
- threat
- 1.Bg6?
- threat
- 2.Sg4#
- 2.Qf5#
- 1...Qxg6
- 2.Sd5#
- 1...hxg6
- 2.Sg4#
- 1...Qc4
- 2.Qf5#
- 1...Qd5
- 2.Sg4#
- 2.Sxd5#
- 1...Qc8
- 2.Sd5#
- 1...Qe6!
- threat
- 1.Bxh7?
- threat
- 2.Qf5#
- 1...Qxh7
- 2.Sg4#
- 2.Sd5#
- 1...Qe6
- 2.Qg6#
- 1...Qd5
- 2.Sg4#
- 2.Sxd5#
- 2.Qg6#
- 1...Qg4
- 2.Sxg4#
- 2.Sd5#
- 1...Qg6
- 2.Sd5#
- 2.Qxg6#
- 1...Qc8
- 2.Sd5#
- 2.Qg6#
- 1...Qg5!
- threat
- 1.Qa2?
- 1...Qxa2
- 2.Sg4#
- 1...Qe6
- 2.Qxe6#
- 1...Qb3
- 2.Sg4#
- 1...Qd5
- 2.Sg4#
- 2.Sxd5#
- 1...Qf7
- 2.Sg4#
- 2.Rxf7#
- 2.Qxf7#
- 1...Qg1
- 2.Sd5#
- 2.Rf7#
- 2.Qe6#
- 2.Qf7#
- 1...Qg2
- 2.Rf7#
- 2.Qe6#
- 2.Qf7#
- 1...Qg3
- 2.Sd5#
- 2.Rf7#
- 2.Qe6#
- 2.Qf7#
- 1...Qg4
- 2.Sxg4#
- 2.Sd5#
- 2.Rf7#
- 2.Qf7#
- 1...Qg5
- 2.Rf7#
- 2.Qe6#
- 2.Qf7#
- 1...Qg6
- 2.Sd5#
- 2.Qe6#
- 1...Qg7
- 2.Sd5#
- 2.Qe6#
- 1...Qa8
- 2.Sg4#
- 2.Sd5#
- 2.Rf7#
- 2.Qe6#
- 2.Qf7#
- 1...Qb8
- 2.Sg4#
- 2.Sd5#
- 2.Rf7#
- 2.Qe6#
- 2.Qf7#
- 1...Qc8
- 2.Sd5#
- 2.Rf7#
- 2.Qf7#
- 1...Qd8
- 2.Sg4#
- 2.Rf7#
- 2.Qe6#
- 2.Qf7#
- 1...Qe8
- 2.Sg4#
- 2.Sd5#
- 2.Qe6#
- 1...Qf8
- 2.Sg4#
- 2.Sd5#
- 2.Qe6#
- 1...Qh8
- 2.Sg4#
- 2.Sd5#
- 2.Rf7#
- 2.Qe6#
- 2.Qf7#
- 1...Qc4!
- 1...Qxa2
- 1.Qg1?
- 1...Qxg1
- 2.Sd5#
- 1...Qe6
- 2.Bg5#
- 2.Bg7#
- 2.Qg5#
- 2.Qg7#
- 1...Qa2
- 2.Sg4#
- 2.Bg5#
- 2.Bg7#
- 2.Qg5#
- 2.Qg7#
- 1...Qb3
- 2.Sg4#
- 2.Bg5#
- 2.Bg7#
- 2.Qg5#
- 2.Qg7#
- 1...Qc4
- 2.Bg5#
- 2.Bg7#
- 2.Qg5#
- 2.Qg7#
- 1...Qd5
- 2.Sg4#
- 2.Sxd5#
- 2.Bg7#
- 2.Qg7#
- 1...Qf7
- 2.Sg4#
- 2.Qg5#
- 1...Qg3
- 2.Sd5#
- 1...Qg4
- 2.Sxg4#
- 2.Sd5#
- 1...Qg5
- 2.Bxg5#
- 2.Qxg5#
- 1...Qg6
- 2.Sd5#
- 1...Qg7
- 2.Sd5#
- 2.Bxg7#
- 2.Qxg7#
- 1...Qa8
- 2.Sg4#
- 2.Sd5#
- 2.Bg5#
- 2.Bg7#
- 2.Qg5#
- 2.Qg7#
- 1...Qb8
- 2.Sg4#
- 2.Sd5#
- 2.Bg5#
- 2.Bg7#
- 2.Qg5#
- 2.Qg7#
- 1...Qc8
- 2.Sd5#
- 2.Bg5#
- 2.Bg7#
- 2.Qg5#
- 2.Qg7#
- 1...Qd8
- 2.Sg4#
- 2.Bg5#
- 2.Bg7#
- 2.Qg5#
- 2.Qg7#
- 1...Qe8
- 2.Sg4#
- 2.Sd5#
- 2.Bg5#
- 2.Bg7#
- 2.Qg5#
- 2.Qg7#
- 1...Qf8
- 2.Sg4#
- 2.Sd5#
- 2.Bg5#
- 2.Qg5#
- 1...Qh8
- 2.Sg4#
- 2.Sd5#
- 2.Bg5#
- 2.Qg5#
- 1...Qg2!
- 1...Qxg1
- 1.Qb3?
- 1...Qxb3
- 2.Sg4#
- 1...Qe6
- 2.Qxe6#
- 1...Qd5
- 2.Sg4#
- 2.Sxd5#
- 1...Qf7
- 2.Sg4#
- 2.Rxf7#
- 2.Qxf7#
- 1...Qg1
- 2.Sd5#
- 2.Rf7#
- 2.Qe6#
- 2.Qf7#
- 1...Qg2
- 2.Rf7#
- 2.Qe6#
- 2.Qf7#
- 1...Qg3
- 2.Sd5#
- 2.Rf7#
- 2.Qe6#
- 2.Qf7#
- 1...Qg4
- 2.Sxg4#
- 2.Sd5#
- 2.Rf7#
- 2.Qf7#
- 1...Qg5
- 2.Rf7#
- 2.Qe6#
- 2.Qf7#
- 1...Qg6
- 2.Sd5#
- 2.Qe6#
- 1...Qg7
- 2.Sd5#
- 2.Qe6#
- 1...Qa8
- 2.Sg4#
- 2.Sd5#
- 2.Rf7#
- 2.Qe6#
- 2.Qf7#
- 1...Qb8
- 2.Sg4#
- 2.Sd5#
- 2.Rf7#
- 2.Qe6#
- 2.Qf7#
- 1...Qc8
- 2.Sd5#
- 2.Rf7#
- 2.Qf7#
- 1...Qd8
- 2.Sg4#
- 2.Rf7#
- 2.Qe6#
- 2.Qf7#
- 1...Qe8
- 2.Sg4#
- 2.Sd5#
- 2.Qe6#
- 1...Qf8
- 2.Sg4#
- 2.Sd5#
- 2.Qe6#
- 1...Qh8
- 2.Sg4#
- 2.Sd5#
- 2.Rf7#
- 2.Qe6#
- 2.Qf7#
- 1...Qc4!
- 1...Qxb3
- 1.f4?
- 1...Qe6
- 2.Bg5#
- 2.Bg7#
- 1...Qa2
- 2.Sg4#
- 2.Bg5#
- 2.Bg7#
- 1...Qb3
- 2.Sg4#
- 2.Bg5#
- 2.Bg7#
- 1...Qc4
- 2.Sg4#
- 2.Bg5#
- 2.Bg7#
- 1...Qd5
- 2.Sg4#
- 2.Sxd5#
- 2.Bg7#
- 1...Qf7
- 2.Sg4#
- 1...Qg1
- 2.Sd5#
- 1...Qg3
- 2.Sd5#
- 1...Qg4
- 2.Sxg4#
- 2.Sd5#
- 1...Qg5
- 2.Bxg5#
- 2.fxg5#
- 1...Qg6
- 2.Sd5#
- 1...Qg7
- 2.Sd5#
- 2.Bxg7#
- 1...Qa8
- 2.Sg4#
- 2.Sd5#
- 2.Bg5#
- 2.Bg7#
- 1...Qb8
- 2.Sg4#
- 2.Sd5#
- 2.Bg5#
- 2.Bg7#
- 1...Qc8
- 2.Sd5#
- 2.Bg5#
- 2.Bg7#
- 1...Qd8
- 2.Sg4#
- 2.Bg5#
- 2.Bg7#
- 1...Qe8
- 2.Sg4#
- 2.Sd5#
- 2.Bg5#
- 2.Bg7#
- 1...Qf8
- 2.Sg4#
- 2.Sd5#
- 2.Bg5#
- 1...Qh8
- 2.Sg4#
- 2.Sd5#
- 2.Bg5#
- 1...Qg2!
- 1...Qe6
- 1.Bb3?
- Keys
- 1.Qb8!
- 1...Qxb8
- 2.Sg4#
- 2.Sd5#
- 1...Qe6
- 2.Qh8#
- 1...Qa2
- 2.Sg4#
- 2.Qh8#
- 1...Qb3
- 2.Sg4#
- 2.Qh8#
- 1...Qc4
- 2.Qh8#
- 1...Qd5
- 2.Sg4#
- 2.Sxd5#
- 2.Qh8#
- 1...Qf7
- 2.Sg4#
- 1...Qg1
- 2.Sd5#
- 2.Qf8#
- 1...Qg2
- 2.Qf8#
- 1...Qg3
- 2.Sd5#
- 2.Qf8#
- 1...Qg4
- 2.Sxg4#
- 2.Sd5#
- 2.Qf8#
- 1...Qg5
- 2.Qf8#
- 1...Qg6
- 2.Sd5#
- 1...Qg7
- 2.Sd5#
- 1...Qc8
- 2.Sd5#
- 1...Qd8
- 2.Sg4#
- 1...Qe8
- 2.Sg4#
- 2.Sd5#
- 1...Qf8
- 2.Sg4#
- 2.Sd5#
- 2.Qxf8#
- 1...Qh8
- 2.Sg4#
- 2.Sd5#
- 2.Qxh8#
- 1...Qxb8
- 1.Qb8!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 4
- Sets
- Q(e);N_GUARD,P_PINP(F)::S(E)
- Q(e);N_GUARD::S(E)
- Tries
- Try
- B(B);
- Threat
- QAR1(A)
- Vars
- Q(e);N_GUARD,P_PINP(H)::R1(K)
- Q(e);N_GUARD::S(E)
- Refutation
- Q(e);
- Try
- B(B);
- Threat
- DUALS(2)
- Vars
- Q(e);N_GUARD,XB(B)::S(E)
- P(d);XB(B)::S(E)
- Q(e);::QAR1(A)
- Q(e);N_GUARD::S(E)
- Refutation
- Q(e);
- Try
- B(B);XP(d)
- Threat
- QAR1(A)
- Vars
- Q(e);N_GUARD::QAR1(A)
- Refutation
- Q(e);P_PINP(H)
- Try
- Q(A);
- Vars
- Q(e);N_GUARD,P_PINP(F),XQ(A)::S(E)
- Q(e);N_GUARD::QAR1(A),XQ(e)
- Q(e);N_GUARD::S(E)
- Refutation
- Q(e);
- Try
- Q(A);
- Vars
- Q(e);N_GUARD,XQ(A)::S(E)
- Q(e);N_GUARD::S(E)
- Refutation
- Q(e);
- Try
- Q(A);
- Vars
- Q(e);N_GUARD,XQ(A)::S(E)
- Q(e);N_GUARD::QAR1(A),XQ(e)
- Refutation
- Q(e);
- Try
- P(C);
- Vars
- Q(e);N_GUARD::S(E)
- Refutation
- Q(e);
- Try
- Actual
- Q(A);
- Vars
- Q(e);OGATE::QAB(A)
- Q(e);N_GUARD::S(E)
- Q(e);N_GUARD::QAR2(A)
- Q(e);N_GUARD,P_PINP(H)::QAR2(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).