MESON Chess Problem Database
Problem Display
PID: 213420 (8/8/8/4n1pp/7k/3Pp2P/6K1/2Q1N3 w - - 0 1)
Overath, Lothar
Badische Neueste Nachrichten, 1990
#2
5 + 5
| 15148 | Sadier Collection | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Sxd3
- 2.Sf3#
- 1...Sf3
- 2.Sxf3#
- 1...Sc4
- 2.Sf3#
- 1...Sg4
- 2.Sf3#
- 1...Sc6
- 2.Sf3#
- 1...Sg6
- 2.Sf3#
- 1...Sd7
- 2.Sf3#
- 1...Sf7
- 2.Sf3#
- 1...Sxd3
- Tries
- 1.Qa3?
- 1...Sxd3
- 2.Sf3#
- 1...g4
- 2.Qe7#
- 1...Sf3
- 2.Sxf3#
- 1...Sc4
- 2.Sf3#
- 1...Sg4
- 2.Sf3#
- 1...Sc6
- 2.Sf3#
- 1...Sg6
- 2.Sf3#
- 1...Sd7
- 2.Sf3#
- 1...Sf7
- 2.Sf3#
- 1...e2!
- 1...Sxd3
- 1.Qxe3?
- threat
- 2.Qf2#
- 2.Qg3#
- 1...Sxd3
- 2.Sf3#
- 2.Qg3#
- 1...Sf3
- 2.Sxf3#
- 2.Qf2#
- 1...Sg4
- 2.Sf3#
- 2.Qg3#
- 1...g4!
- threat
- 1.Qc4+?
- 1...Sxc4
- 2.Sf3#
- 1...Sg4
- 2.Sf3#
- 1...g4!
- 1...Sxc4
- 1.Qc6?
- 1...Sxd3
- 2.Sf3#
- 1...Sxc6
- 2.Sf3#
- 1...g4
- 2.Qf6#
- 1...Sf3
- 2.Sxf3#
- 1...Sc4
- 2.Sf3#
- 1...Sg4
- 2.Sf3#
- 1...Sg6
- 2.Sf3#
- 1...Sd7
- 2.Sf3#
- 1...Sf7
- 2.Sf3#
- 1...e2!
- 1...Sxd3
- 1.Qc7?
- 1...Sxd3
- 2.Sf3#
- 2.Qg3#
- 1...g4
- 2.Qd8#
- 2.Qe7#
- 1...Sf3
- 2.Sxf3#
- 2.Qg3#
- 1...Sc4
- 2.Sf3#
- 2.Qg3#
- 1...Sg4
- 2.Sf3#
- 2.Qg3#
- 1...Sc6
- 2.Sf3#
- 2.Qg3#
- 1...Sg6
- 2.Sf3#
- 2.Qg3#
- 1...Sd7
- 2.Sf3#
- 2.Qg3#
- 1...Sf7
- 2.Sf3#
- 2.Qg3#
- 1...e2!
- 1...Sxd3
- 1.Qc8?
- 1...Sxd3
- 2.Sf3#
- 1...g4
- 2.Qd8#
- 1...Sf3
- 2.Sxf3#
- 1...Sc4
- 2.Sf3#
- 1...Sg4
- 2.Sf3#
- 1...Sc6
- 2.Sf3#
- 1...Sg6
- 2.Sf3#
- 1...Sd7
- 2.Sf3#
- 1...Sf7
- 2.Sf3#
- 1...e2!
- 1...Sxd3
- 1.Qa3?
- Keys
- 1.Qc5!
- 1...Sxd3
- 2.Sf3#
- 1...g4
- 2.Qe7#
- 1...e2
- 2.Qf2#
- 1...Sf3
- 2.Sxf3#
- 1...Sc4
- 2.Sf3#
- 1...Sg4
- 2.Sf3#
- 1...Sc6
- 2.Sf3#
- 1...Sg6
- 2.Sf3#
- 1...Sd7
- 2.Sf3#
- 1...Sf7
- 2.Sf3#
- 1...Sxd3
- 1.Qc5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- S(c);N_GUARD,XP(D)::S(B)
- S(c);N_GUARD::S(B),XS(c)
- S(c);N_GUARD::S(B)
- Tries
- Try
- Q(A);
- Vars
- S(c);N_GUARD,XP(D)::S(B)
- P(d);OGATEB::QAB(A)
- S(c);N_GUARD::S(B),XS(c)
- S(c);N_GUARD::S(B)
- Refutation
- P(a);
- Try
- Q(A);XP(a)
- Threat
- DUALS(2)
- Refutation
- P(d);
- Try
- Q(A);CHECK
- Vars
- S(c);XQ(A)::S(B)
- S(c);P_SPINS(c)::S(B)
- Refutation
- P(d);P_SPINP(d)
- Try
- Q(A);
- Vars
- S(c);N_GUARD,XP(D)::S(B)
- S(c);N_GUARD,XQ(A)::S(B)
- P(d);OGATEB::QAB(A)
- S(c);N_GUARD::S(B),XS(c)
- S(c);N_GUARD::S(B)
- Refutation
- P(a);
- Try
- Q(A);
- Refutation
- P(a);
- Try
- Q(A);
- Vars
- S(c);N_GUARD,XP(D)::S(B)
- P(d);OGATEB::QAB(A)
- S(c);N_GUARD::S(B),XS(c)
- S(c);N_GUARD::S(B)
- Refutation
- P(a);
- Try
- Actual
- Q(A);
- Vars
- S(c);N_GUARD,XP(D)::S(B)
- P(d);OGATEB::QAB(A)
- P(a);OGATE::QAB(A)
- S(c);N_GUARD::S(B),XS(c)
- S(c);N_GUARD::S(B)
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).