MESON Chess Problem Database
Problem Display
PID: 265522 (6Qb/4N3/6pn/6Np/K3pkPP/5np1/3P2b1/B2B4 w - - 0 1)
Keller, Michael
Die Schwalbe, 1972
#2
9 + 9
SOLUTION
- SOUND
- Sets
- 1...Se1
- 2.Se6#
- 2.Sd5#
- 2.Sxg6#
- 1...Sg1
- 2.Se6#
- 2.Sd5#
- 2.Sxg6#
- 1...Sxd2
- 2.Sd5#
- 1...Sh2
- 2.Se6#
- 2.Sd5#
- 2.Sxg6#
- 1...Sd4
- 2.Sxg6#
- 1...Sxh4
- 2.Se6#
- 1...Se5
- 2.Se6#
- 2.Sd5#
- 1...Sxg5
- 2.Sd5#
- 2.Sxg6#
- 1...Sxg4
- 2.Se6#
- 1...hxg4
- 2.Se6#
- 1...Se1
- Tries
- 1.Qc4?
- threat
- 2.Qxe4#
- 1...Kxg4
- 2.Qxe4#
- 1...Sxd2
- 2.Sd5#
- 1...Sxh4
- 2.Se6#
- 1...Sxg5
- 2.Sd5#
- 2.Sxg6#
- 1...Se1
- 2.Se6#
- 2.Sd5#
- 2.Sxg6#
- 1...Sg1
- 2.Se6#
- 2.Sd5#
- 2.Sxg6#
- 1...Sh2
- 2.Se6#
- 2.Sd5#
- 2.Sxg6#
- 1...Sd4
- 2.Sxg6#
- 1...Se5
- 2.Se6#
- 2.Sd5#
- 1...Bd4!
- threat
- 1.Qd5?
- threat
- 2.Qxe4#
- 1...Kxg4
- 2.Qxe4#
- 1...Sxh4
- 2.Se6#
- 1...Sxg5
- 2.Sxg6#
- 2.Qxg5#
- 1...Se1
- 2.Se6#
- 2.Sxg6#
- 1...Sg1
- 2.Se6#
- 2.Sxg6#
- 1...Sh2
- 2.Se6#
- 2.Sxg6#
- 1...Sd4
- 2.Sxg6#
- 1...Se5
- 2.Se6#
- 1...e3
- 2.Qe4#
- 1...Sxd2!
- threat
- 1.Qe6?
- threat
- 2.Sd5#
- 2.Sxg6#
- 2.Qxe4#
- 1...Sxd2
- 2.Sd5#
- 1...Sxg5
- 2.Sd5#
- 2.Sxg6#
- 1...Sf5
- 2.Qxe4#
- 1...Be5
- 2.Sd5#
- 2.Sxg6#
- 1...Se1
- 2.Sd5#
- 2.Sxg6#
- 1...Sg1
- 2.Sd5#
- 2.Sxg6#
- 1...Sh2
- 2.Sd5#
- 2.Sxg6#
- 1...Sd4
- 2.Sd5#
- 2.Sxg6#
- 1...Se5
- 2.Sd5#
- 1...e3
- 2.Sd5#
- 2.Sxg6#
- 2.Qe4#
- 2.dxe3#
- 1...Sxh4!
- threat
- 1.Qxg6?
- threat
- 2.Se6#
- 2.Qxe4#
- 1...Kxg4
- 2.Qxe4#
- 1...Bxa1
- 2.Qxe4#
- 1...Sxd2
- 2.Sd5#
- 1...Sxh4
- 2.Se6#
- 2.Sd5#
- 1...Sxg5
- 2.Sd5#
- 2.Qxg5#
- 1...Bb2
- 2.Qxe4#
- 1...Bc3
- 2.Qxe4#
- 1...Bd4
- 2.Qxe4#
- 1...Se1
- 2.Se6#
- 2.Sd5#
- 1...Sg1
- 2.Se6#
- 2.Sd5#
- 1...Sh2
- 2.Se6#
- 2.Sd5#
- 1...Se5
- 2.Se6#
- 2.Sd5#
- 1...Sf5
- 2.Se6#
- 2.Qxf5#
- 1...e3
- 2.Se6#
- 2.Qe4#
- 1...Sd4!
- threat
- 1.Qc8?
- threat
- 2.Sd5#
- 2.Sxg6#
- 1...Bxa1
- 2.Sxg6#
- 1...Sxd2
- 2.Sd5#
- 1...Sxh4
- 2.Se6#
- 1...Bb2
- 2.Sxg6#
- 1...Bc3
- 2.Sxg6#
- 1...Bd4
- 2.Sxg6#
- 1...Sd4
- 2.Sxg6#
- 1...Se5
- 2.Se6#
- 2.Sd5#
- 1...Sf5!
- threat
- 1.Qc4?
- Keys
- 1.Qa8!
- threat
- 2.Qxe4#
- 1...Kxg4
- 2.Qxe4#
- 1...Sxd2
- 2.Sd5#
- 1...Sxh4
- 2.Se6#
- 1...Sxg5
- 2.Sd5#
- 2.Sxg6#
- 1...Se1
- 2.Se6#
- 2.Sd5#
- 2.Sxg6#
- 1...Sg1
- 2.Se6#
- 2.Sd5#
- 2.Sxg6#
- 1...Sh2
- 2.Se6#
- 2.Sd5#
- 2.Sxg6#
- 1...Sd4
- 2.Sxg6#
- 1...Se5
- 2.Se6#
- 2.Sd5#
- 1...e3
- 2.Qe4#
- threat
- 1.Qa8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 2
- Sets
- S(b);XP(C)::S(H)
- S(b);::S(H),XP(g)
- S(b);XP(F)::S(G)
- S(h);SBLOCK,XP(E)::S(G)
- P(f);SBLOCK,XP(E)::S(G)
- Tries
- Try
- Q(I);P_PINP(d)
- Threat
- QAR1(I),XP(d)
- Vars
- K(e);P-FLIGHT,P_SPINS(b),XP(E)::QAR2(I),XP(d)
- S(b);XP(C)::S(H)
- S(b);XP(F)::S(G)
- S(b);N_SPINP(d)::S(H),XP(g)
- Refutation
- B(i);N_SPINP(d)
- Try
- Q(I);
- Threat
- QAR1(I),XP(d)
- Vars
- K(e);P-FLIGHT,P_SPINS(b),XP(E)::QAR2(I),XP(d)
- S(b);XP(F)::S(G)
- S(b);::S(H),XP(g)
- S(b);::S(G)
- P(d);::QAR1(I)
- Refutation
- S(b);XP(C)
- Try
- Q(I);
- Threat
- DUALS(3)
- Vars
- S(b);XP(C)::S(H)
- S(h);::QAR1(I),XP(d)
- S(b);::S(H)
- Refutation
- S(b);XP(F)
- Try
- Q(I);XP(g)
- Threat
- DUALS(2)
- Vars
- K(e);P-FLIGHT,P_SPINS(b),XP(E)::QAR2(I),XP(d)
- B(i);XB(A)::QAR1(I),XP(d)
- S(b);XP(C)::S(H)
- B(i);::QAR1(I),XP(d)
- Refutation
- S(b);
- Try
- Q(I);
- Threat
- DUALS(2)
- Vars
- B(i);XB(A)::S(H),XP(g)
- S(b);XP(C)::S(H)
- S(b);XP(F)::S(G)
- B(i);::S(H),XP(g)
- S(b);::S(H),XP(g)
- Refutation
- S(h);
- Try
- Actual
- Q(I);
- Threat
- QAR1(I),XP(d)
- Vars
- K(e);P-FLIGHT,P_SPINS(b),XP(E)::QAR2(I),XP(d)
- S(b);XP(C)::S(H)
- S(b);XP(F)::S(G)
- S(b);::S(H),XP(g)
- P(d);::QAR1(I)
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).