MESON Chess Problem Database
Problem Display
PID: 227473 (k2K4/Pp4Q1/n7/1N6/8/8/8/8 w - - 0 1)
von Gottschall, Hermann
Streifzuge durch des Gebeit des Schachproblems, 1926
#2
4 + 3
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...b6
- 2.Qg2#
- 1...b6
- Tries
- 1.Qd4?
- 1...b6
- 2.Qe4#
- 2.Qd5#
- 1...Sc7
- 2.Sxc7#
- 1...Sb4
- 2.Sc7#
- 1...Sb8
- 2.Sc7#
- 1...Sc5!
- 1...b6
- 1.Qe5?
- 1...b6
- 2.Qe4#
- 2.Qd5#
- 1...Sb4
- 2.Qb8#
- 1...Sc5
- 2.Qb8#
- 1...Sb8
- 2.Qxb8#
- 2.axb8Q#
- 2.axb8R#
- 1...Sc7!
- 1...b6
- 1.Qf8?
- 1...b6
- 2.Qf3#
- 1...Sc7
- 2.Kxc7#
- 1...Sb4
- 2.Kc7#
- 2.Kd7#
- 2.Ke7#
- 1...Sc5
- 2.Kc7#
- 2.Ke7#
- 1...Sb8!
- 1...b6
- 1.Qh8?
- 1...b6
- 2.Qh1#
- 1...Sc7
- 2.Kxc7#
- 1...Sb4
- 2.Kc7#
- 2.Kd7#
- 2.Ke7#
- 1...Sc5
- 2.Kc7#
- 2.Ke7#
- 1...Sb8!
- 1...b6
- 1.Qg1?
- 1...b6
- 2.Qh1#
- 2.Qg2#
- 1...Sc7
- 2.Sxc7#
- 1...Sb4
- 2.Sc7#
- 1...Sb8
- 2.Sc7#
- 1...Sc5!
- 1...b6
- 1.Qg3?
- 1...b6
- 2.Qg2#
- 2.Qf3#
- 1...Sb4
- 2.Qb8#
- 1...Sc5
- 2.Qb8#
- 1...Sb8
- 2.Qxb8#
- 2.axb8Q#
- 2.axb8R#
- 1...Sc7!
- 1...b6
- 1.Qg4?
- 1...b6
- 2.Qf3#
- 2.Qg2#
- 2.Qe4#
- 1...Sc7
- 2.Qc8#
- 1...Sb4
- 2.Qc8#
- 1...Sc5
- 2.Qc8#
- 1...Sb8!
- 1...b6
- 1.Qc7?
- 1...Sb4
- 2.Qb8#
- 2.Qc8#
- 1...Sc5
- 2.Qb8#
- 2.Qc8#
- 1...Sb8
- 2.Qxb8#
- 2.axb8Q#
- 2.axb8R#
- 1...b6
- 2.Qc6#
- 1...Sxc7!
- 1...Sb4
- 1.Qd7?
- 1...Sc7
- 2.Qc8#
- 1...Sb4
- 2.Qc8#
- 1...Sc5
- 2.Qc8#
- 1...b6
- 2.Qc6#
- 2.Qd5#
- 1...Sb8!
- 1...Sc7
- 1.Qg8?
- 1...b6
- 2.Qd5#
- 2.Qg2#
- 1...Sc7
- 2.Kxc7#
- 1...Sb4
- 2.Kc7#
- 2.Kd7#
- 2.Ke7#
- 1...Sc5
- 2.Kc7#
- 2.Ke7#
- 1...Sb8!
- 1...b6
- 1.Qd4?
- Keys
- 1.Qa1!
- 1...b6
- 2.Qh1#
- 1...Sc7
- 2.Sxc7#
- 1...Sb4
- 2.Sc7#
- 1...Sc5
- 2.Sc7#
- 1...Sb8
- 2.Sc7#
- 1...b6
- 1.Qa1!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 4
- REMOVED MATES = 0
- Sets
- P(b);OGATEB::QAB(C)
- Tries
- Try
- Q(C);
- Vars
- S(a);N_GUARD::S(A),XS(a)
- S(a);N_GUARD::S(A)
- Refutation
- S(a);
- Try
- Q(C);
- Vars
- S(a);N_GUARD::QAR1(C)
- Refutation
- S(a);
- Try
- Q(C);
- Vars
- P(b);OGATEB::QAB(C)
- S(a);::QAR(C)+K(D),XS(a)
- Refutation
- S(a);
- Try
- Q(C);
- Vars
- P(b);OGATEB::QAB(C)
- S(a);::QAR(C)+K(D),XS(a)
- Refutation
- S(a);
- Try
- Q(C);
- Vars
- S(a);N_GUARD::S(A),XS(a)
- S(a);N_GUARD::S(A)
- Refutation
- S(a);
- Try
- Q(C);
- Vars
- S(a);N_GUARD::QAR1(C)
- Refutation
- S(a);
- Try
- Q(C);
- Vars
- S(a);N_GUARD::QAR2(C)
- Refutation
- S(a);
- Try
- Q(C);
- Vars
- P(b);OGATEB::QAB(C)
- Refutation
- S(a);XQ(C)
- Try
- Q(C);
- Vars
- S(a);N_GUARD::QAR2(C)
- Refutation
- S(a);
- Try
- Q(C);
- Vars
- S(a);::QAR(C)+K(D),XS(a)
- Refutation
- S(a);
- Try
- Actual
- Q(C);
- Vars
- P(b);OGATEB::QAB(C)
- S(a);N_GUARD::S(A),XS(a)
- S(a);N_GUARD::S(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).