MESON Chess Problem Database
Problem Display
PID: 263228 (8/2b2p2/8/2p5/K1k1NNQR/8/1Bn4q/8 w - - 0 1)
Lipton, Michael
Parthasarathy, Dr Mukkur
The Observer, 1965
#2
6 + 6
| 15601 | Albrecht-Leiss-Degener Collection | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Qg1
- 2.Sd2#
- 2.Qe2#
- 1...Qg3
- 2.Sd2#
- 1...Qh1
- 2.Sd2#
- 2.Qe2#
- 1...Qd2
- 2.Sxd2#
- 1...Qe2
- 2.Qxe2#
- 1...Qh3
- 2.Sd2#
- 1...Qxh4
- 2.Sd2#
- 2.Qe2#
- 1...Ba5
- 2.Sd6#
- 1...Bb6
- 2.Sd6#
- 1...Bd6
- 2.Sxd6#
- 1...Bd8
- 2.Sd6#
- 1...f5
- 2.Qg8#
- 1...f6
- 2.Qe6#
- 2.Qg8#
- 1...Qg1
- Tries
- 1.Rxh2?
- threat
- 2.Sd2#
- 2.Rxc2#
- 2.Qe2#
- 1...Ba5
- 2.Sd6#
- 2.Qe2#
- 1...Be5
- 2.Sd2#
- 2.Qe2#
- 1...Sa1
- 2.Sd2#
- 2.Qe2#
- 1...Se1
- 2.Sd2#
- 1...Sa3
- 2.Sd2#
- 2.Qe2#
- 1...Se3
- 2.Sd2#
- 2.Qe2#
- 1...Sb4
- 2.Sd2#
- 1...Sd4
- 2.Sd2#
- 1...Bxf4!
- threat
- 1.Qd1?
- threat
- 2.Qd3#
- 2.Qd5#
- 1...Bxf4
- 2.Sd6#
- 1...Qg3
- 2.Sd2#
- 2.Qd5#
- 1...Qd2
- 2.Sxd2#
- 1...Qe2
- 2.Qxe2#
- 2.Qd5#
- 1...Qh3
- 2.Sd2#
- 2.Qd5#
- 1...Se1
- 2.Qb3#
- 2.Qd5#
- 1...Se3
- 2.Qb3#
- 2.Qd3#
- 1...Sb4
- 2.Qb3#
- 1...Sd4
- 2.Qd3#
- 1...Qxf4!
- threat
- 1.Qf3?
- threat
- 2.Qb3#
- 2.Qc3#
- 2.Qd3#
- 1...Qxf4
- 2.Sd2#
- 2.Qb3#
- 1...Bxf4
- 2.Sd6#
- 2.Qb3#
- 1...Qg3
- 2.Sd2#
- 1...Qd2
- 2.Sxd2#
- 2.Qb3#
- 1...Qe2
- 2.Qxe2#
- 2.Qb3#
- 2.Qc3#
- 1...Qh3
- 2.Sd2#
- 1...Ba5
- 2.Sd6#
- 2.Qb3#
- 2.Qd3#
- 1...Be5
- 2.Qb3#
- 2.Qd3#
- 1...Sa1
- 2.Qc3#
- 2.Qd3#
- 1...Se1
- 2.Qb3#
- 2.Qc3#
- 1...Sb4
- 2.Qb3#
- 2.Qc3#
- 1...Sd4
- 2.Qc3#
- 2.Qd3#
- 1...Se3!
- threat
- 1.Qh3?
- threat
- 2.Qb3#
- 2.Qc3#
- 2.Qd3#
- 1...Qxf4
- 2.Qb3#
- 1...Qxh3
- 2.Sd2#
- 1...Bxf4
- 2.Qb3#
- 1...Qg3
- 2.Sd2#
- 1...Qd2
- 2.Sxd2#
- 2.Qb3#
- 1...Qe2
- 2.Qb3#
- 2.Qc3#
- 1...Ba5
- 2.Sd6#
- 2.Qb3#
- 2.Qd3#
- 1...Be5
- 2.Qb3#
- 2.Qd3#
- 1...Sa1
- 2.Qc3#
- 2.Qd3#
- 1...Se1
- 2.Qb3#
- 2.Qc3#
- 1...Sb4
- 2.Qb3#
- 2.Qc3#
- 1...Sd4
- 2.Qc3#
- 2.Qd3#
- 1...Se3!
- threat
- 1.Qd7?
- threat
- 2.Qb5#
- 2.Qd3#
- 2.Qd5#
- 2.Qxf7#
- 1...Qxf4
- 2.Sd2#
- 1...Se3
- 2.Qb5#
- 2.Qd3#
- 1...Qg3
- 2.Sd2#
- 2.Qb5#
- 2.Qd5#
- 2.Qxf7#
- 1...Qd2
- 2.Sxd2#
- 2.Qb5#
- 1...Qe2
- 2.Qb5#
- 2.Qd5#
- 2.Qxf7#
- 1...Qh3
- 2.Sd2#
- 2.Qb5#
- 2.Qd5#
- 1...Bd6
- 2.Sxd6#
- 2.Qb5#
- 2.Qxf7#
- 1...Se1
- 2.Qb5#
- 2.Qd5#
- 2.Qxf7#
- 1...Sa3
- 2.Qd3#
- 2.Qd5#
- 2.Qxf7#
- 1...Sb4
- 2.Qb5#
- 1...Sd4
- 2.Qd5#
- 1...f5
- 2.Qb5#
- 2.Qe6#
- 2.Qd3#
- 2.Qd5#
- 2.Qf7#
- 1...f6
- 2.Qb5#
- 2.Qe6#
- 2.Qd3#
- 2.Qd5#
- 2.Qf7#
- 1...Bxf4!
- threat
- 1.Qg3?
- threat
- 2.Qb3#
- 2.Qc3#
- 2.Qd3#
- 1...Qxg3
- 2.Sd2#
- 1...Bxf4
- 2.Qb3#
- 1...Qd2
- 2.Sxd2#
- 2.Qb3#
- 1...Qe2
- 2.Qb3#
- 2.Qc3#
- 1...Qh3
- 2.Sd2#
- 1...Ba5
- 2.Sd6#
- 2.Qb3#
- 2.Qd3#
- 1...Be5
- 2.Qb3#
- 2.Qd3#
- 1...Sa1
- 2.Qc3#
- 2.Qd3#
- 1...Se1
- 2.Qb3#
- 2.Qc3#
- 1...Sb4
- 2.Qb3#
- 2.Qc3#
- 1...Sd4
- 2.Qc3#
- 2.Qd3#
- 1...Se3!
- threat
- 1.Rxh2?
- Keys
- 1.Qf5!
- threat
- 2.Qxc5#
- 2.Qd5#
- 2.Qxf7#
- 1...Qxf4
- 2.Sd2#
- 1...Bxf4
- 2.Sd6#
- 1...Se3
- 2.Qxc5#
- 1...Qg1
- 2.Sd2#
- 2.Qd5#
- 2.Qxf7#
- 1...Qd2
- 2.Sxd2#
- 2.Qxc5#
- 1...Qf2
- 2.Qd5#
- 2.Qxf7#
- 1...Qh3
- 2.Sd2#
- 2.Qxc5#
- 2.Qd5#
- 1...Be5
- 2.Qxf7#
- 1...Bb6
- 2.Sd6#
- 2.Qd5#
- 2.Qxf7#
- 1...Bd6
- 2.Sxd6#
- 2.Qd5#
- 2.Qxf7#
- 1...Sb4
- 2.Qxc5#
- 1...Sd4
- 2.Qxc5#
- 2.Qd5#
- 1...f6
- 2.Qe6#
- 2.Qxc5#
- 2.Qd5#
- threat
- 1.Qf5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 9
- Sets
- Q(b);N_GUARD::S(C)
- Q(b);N_GUARD::S(C),XQ(b)
- Q(b);N_GUARD::QAB(E),XQ(b)
- B(e);N_GUARD::S(C)
- B(e);N_GUARD::S(C),XB(e)
- P(f);OGATEB::QAB(E)
- Tries
- Try
- R(F);XQ(b)
- Threat
- DUALS(3)
- Vars
- S(a);::S(C)
- Refutation
- B(e);XS(D)
- Try
- Q(E);
- Threat
- DUALS(2)
- Vars
- B(e);N_GUARD,XS(D)::S(C)
- Q(b);N_GUARD::S(C),XQ(b)
- S(a);OGATE::QAB1(E)
- S(a);::QAB1(E)
- Refutation
- Q(b);XS(D)
- Try
- Q(E);
- Threat
- DUALS(3)
- Vars
- Q(b);N_GUARD::S(C)
- Refutation
- S(a);
- Try
- Q(E);
- Threat
- DUALS(3)
- Vars
- Q(b);XS(D)::QAB1(E)
- Q(b);N_GUARD,XQ(E)::S(C)
- B(e);XS(D)::QAB1(E)
- Q(b);N_GUARD::S(C)
- Refutation
- S(a);
- Try
- Q(E);
- Threat
- DUALS(4)
- Vars
- Q(b);N_GUARD,XS(D)::S(C)
- S(a);::QAB1(E)
- Refutation
- B(e);XS(D)
- Try
- Q(E);
- Threat
- DUALS(3)
- Vars
- Q(b);N_GUARD,XQ(E)::S(C)
- B(e);XS(D)::QAB1(E)
- Q(b);N_GUARD::S(C)
- Refutation
- S(a);
- Try
- Actual
- Q(E);
- Threat
- DUALS(3)
- Vars
- Q(b);N_GUARD,XS(D)::S(C)
- B(e);N_GUARD,XS(D)::S(C)
- S(a);::QAR1(E),XP(d)
- B(e);::QAB(E),XP(f)
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).