MESON Chess Problem Database
Problem Display
PID: 277891 (8/1NQ2NPK/B1p5/P2p4/2Pk1p2/q2nRPpp/2PP1P2/5b1n w - - 0 1)
Klun, Joseph
To Mat, 1964
#2
13 + 10
| 15601 | Albrecht-Leiss-Degener Collection | 2024 |
SOLUTION
- SOUND
- Sets
- 1...Qc5
- 2.c3#
- 1...Qd6
- 2.c3#
- 1...Qe7
- 2.c3#
- 1...Qf8
- 2.c3#
- 1...Qa2
- 2.c3#
- 1...Qa4
- 2.c3#
- 1...Sc1
- 2.Qxf4#
- 2.Qe5#
- 1...Se1
- 2.Qxf4#
- 2.Qe5#
- 1...Sb2
- 2.Qxf4#
- 2.Qe5#
- 1...Sxf2
- 2.Qe5#
- 1...Sb4
- 2.Qxf4#
- 2.Qe5#
- 1...Sc5
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...fxe3
- 2.fxe3#
- 1...Qc5
- Tries
- 1.Sg5?
- threat
- 2.Se6#
- 1...Qd6
- 2.c3#
- 1...Qe7
- 2.c3#
- 1...Sc5
- 2.Qe5#
- 1...dxc4!
- threat
- 1.Sfd6?
- threat
- 2.Sf5#
- 1...Qxd6
- 2.c3#
- 1...dxc4!
- threat
- 1.Sh6?
- threat
- 2.Sf5#
- 1...Qf8
- 2.c3#
- 1...dxc4!
- threat
- 1.Sfd8?
- threat
- 2.Sxc6#
- 2.Se6#
- 1...Qc5
- 2.Se6#
- 2.c3#
- 1...Qd6
- 2.c3#
- 1...Qe7
- 2.Sxc6#
- 2.c3#
- 1...Qa4
- 2.Se6#
- 2.c3#
- 1...Sb4
- 2.Se6#
- 2.Qxf4#
- 2.Qe5#
- 1...Sc5
- 2.Sxc6#
- 2.Qe5#
- 1...Se5
- 2.Se6#
- 2.Qxe5#
- 1...c5
- 2.Sc6#
- 2.Se6#
- 1...dxc4!
- threat
- 1.Qd6?
- threat
- 2.Re4#
- 1...Qxd6
- 2.c3#
- 1...Sdxf2
- 2.Qe5#
- 2.Qf6#
- 1...fxe3
- 2.fxe3#
- 1...Sc5
- 2.Qe5#
- 2.Qf6#
- 1...Shxf2!
- threat
- 1.Qd8?
- threat
- 2.Re4#
- 1...Sdxf2
- 2.Qf6#
- 1...fxe3
- 2.fxe3#
- 1...Qd6
- 2.c3#
- 1...Qe7
- 2.c3#
- 1...Sc5
- 2.Qf6#
- 1...Shxf2!
- threat
- 1.Qxc6?
- threat
- 2.Qxd5#
- 1...dxc4
- 2.Re4#
- 2.Qe4#
- 2.Qxc4#
- 1...Qc5
- 2.c3#
- 1...Qd6
- 2.c3#
- 1...Sb4
- 2.Qc5#
- 2.Qb6#
- 2.Qf6#
- 1...Qxa5!
- threat
- 1.Sg5?
- Keys
- 1.Sc5!
- threat
- 2.Se6#
- 1...Kxc5
- 2.Qb6#
- 1...Qxc5
- 2.c3#
- 1...Sxc5
- 2.Qe5#
- 1...dxc4
- 2.Qd6#
- threat
- 1.Sc5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 8
- Sets
- Q(c);N_GUARD::P(A)
- S(d);N_GUARD,XP(C)::QAB1(J)
- S(d);N_GUARD::QAB1(J)
- S(d);N_GUARD::QAB1(J),XS(d)
- P(h);OGATE,XR(D)::P(C),XP(h)
- Tries
- Try
- S(K);
- Threat
- S(K)
- Vars
- Q(c);N_GUARD::P(A)
- Q(c);N_GUARD,P_PINP(L)::P(A)
- S(d);N_GUARD::QAB1(J)
- Refutation
- P(i);XP(F)
- Try
- S(K);
- Threat
- S(K)
- Vars
- Q(c);N_GUARD,XS(K)::P(A)
- Refutation
- P(i);XP(F)
- Try
- S(K);
- Threat
- S(K)
- Vars
- Q(c);N_GUARD::P(A)
- Refutation
- P(i);XP(F)
- Try
- S(K);
- Threat
- DUALS(2)
- Vars
- Q(c);N_GUARD::P(A)
- Refutation
- P(i);XP(F)
- Try
- Q(J);P_PINP(i)
- Threat
- R1(D)
- Vars
- Q(c);N_GUARD,N_SPINP(i),XQ(J)::P(A)
- P(h);OGATE,XR(D)::P(C),XP(h)
- Refutation
- S(b);XP(C)
- Try
- Q(J);P_PINP(i)
- Threat
- R1(D)
- Vars
- S(d);N_GUARD,XP(C)::QAB(J)
- P(h);OGATE,XR(D)::P(C),XP(h)
- Q(c);N_GUARD,N_SPINP(i)::P(A)
- Q(c);N_GUARD::P(A)
- S(d);N_GUARD::QAB(J)
- Refutation
- S(b);XP(C)
- Try
- Q(J);XP(j)
- Threat
- QAR1(J),XP(i)
- Vars
- Q(c);N_GUARD::P(A)
- Refutation
- Q(c);XP(G)
- Try
- Actual
- S(I);
- Threat
- S(I)
- Vars
- K(g);OGATEB,P_SPINP(j),S_FLIGHT,XS(I)::QAB1(J)
- Q(c);N_GUARD,SBLOCK,XS(I)::P(A)
- S(d);N_GUARD,SBLOCK,XS(I)::QAB1(J)
- P(i);OGATEB,XP(F)::QAR2(J)
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).