MESON Chess Problem Database
Problem Display
PID: 222388 (6q1/7b/1Qn2B1n/5p2/5k2/4NB2/6pP/4N1K1 w - - 0 1)
Berger, Johann Nepomuk
Das Schachproblem und dessen kunstgerech, 1884
#2
7 + 7
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qb3
- 2.S3xg2#
- 1...Qc4
- 2.S3xg2#
- 1...Qd5
- 2.S3xg2#
- 2.Sxd5#
- 1...Qe6
- 2.S3xg2#
- 1...Qf7
- 2.S3xg2#
- 1...Qg3
- 2.Sd5#
- 1...Qg4
- 2.Sd5#
- 1...Qg5
- 2.Sd5#
- 1...Qg6
- 2.Sd5#
- 1...Qg7
- 2.Sd5#
- 1...Qa8
- 2.S3xg2#
- 2.Sd5#
- 1...Qb8
- 2.S3xg2#
- 2.Sd5#
- 1...Qc8
- 2.S3xg2#
- 2.Sd5#
- 1...Qd8
- 2.S3xg2#
- 1...Qe8
- 2.S3xg2#
- 2.Sd5#
- 1...Qf8
- 2.S3xg2#
- 2.Sd5#
- 1...Qh8
- 2.S3xg2#
- 2.Sd5#
- 1...Bg6
- 2.S3xg2#
- 1...Sb4
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sa5
- 2.Qd4#
- 1...Se5
- 2.Qd4#
- 1...Sa7
- 2.Qd4#
- 1...Se7
- 2.Qd4#
- 1...Sb8
- 2.Qd4#
- 1...Sd8
- 2.Qd4#
- 1...Sg4
- 2.S3xg2#
- 1...Sf7
- 2.Sd5#
- 1...Qb3
- Tries
- 1.Bd5?
- threat
- 2.Sd3#
- 1...Sd4
- 2.Qxd4#
- 1...Sb4
- 2.Qd4#
- 1...Se5
- 2.Qd4#
- 1...Qxd5!
- threat
- 1.Bxc6?
- threat
- 2.Sd3#
- 2.Qd4#
- 1...Qe6
- 2.S1xg2#
- 2.Sd3#
- 1...Qb3
- 2.S1xg2#
- 2.Qd4#
- 1...Qc4
- 2.S1xg2#
- 1...Qd8
- 2.S1xg2#
- 1...Qe8
- 2.S1xg2#
- 2.Sd3#
- 1...Qd5!
- threat
- 1.Qc5?
- 1...Sd4
- 2.Qxd4#
- 2.Qe5#
- 1...Qe6
- 2.S3xg2#
- 1...Qb3
- 2.S3xg2#
- 1...Qc4
- 2.S3xg2#
- 1...Qd5
- 2.S3xg2#
- 2.Sxd5#
- 1...Qf7
- 2.S3xg2#
- 1...Qg3
- 2.Sd5#
- 1...Qg4
- 2.Sd5#
- 1...Qg5
- 2.Sd5#
- 1...Qg6
- 2.Sd5#
- 1...Qg7
- 2.Sd5#
- 1...Qa8
- 2.S3xg2#
- 2.Sd5#
- 1...Qb8
- 2.S3xg2#
- 2.Sd5#
- 1...Qc8
- 2.S3xg2#
- 2.Sd5#
- 1...Qd8
- 2.S3xg2#
- 1...Qe8
- 2.S3xg2#
- 2.Sd5#
- 1...Qf8
- 2.S3xg2#
- 2.Sd5#
- 1...Qh8
- 2.S3xg2#
- 2.Sd5#
- 1...Bg6
- 2.S3xg2#
- 1...Sb4
- 2.Qd4#
- 2.Qe5#
- 1...Sa5
- 2.Qd4#
- 2.Qe5#
- 1...Se5
- 2.Qd4#
- 2.Qxe5#
- 1...Sa7
- 2.Qd4#
- 2.Qe5#
- 1...Se7
- 2.Qd4#
- 2.Qe5#
- 1...Sb8
- 2.Qd4#
- 2.Qe5#
- 1...Sd8
- 2.Qd4#
- 2.Qe5#
- 1...Sg4
- 2.S3xg2#
- 1...Sf7
- 2.Sd5#
- 1...Qa2!
- 1...Sd4
- 1.Qc7+?
- 1...Se5
- 2.Qxe5#
- 1...Kxe3!
- 1...Se5
- 1.Qxc6?
- 1...Kxe3
- 2.Qc1#
- 1...Qe6
- 2.S1xg2#
- 2.S3xg2#
- 1...Qb3
- 2.S1xg2#
- 2.S3xg2#
- 1...Qc4
- 2.S1xg2#
- 2.S3xg2#
- 1...Qd5
- 2.S3xg2#
- 2.Sxd5#
- 1...Qf7
- 2.S1xg2#
- 2.S3xg2#
- 1...Qg3
- 2.Sd5#
- 1...Qg4
- 2.Sd5#
- 1...Qg5
- 2.Sd5#
- 1...Qg6
- 2.Sd5#
- 1...Qg7
- 2.Sd5#
- 1...Qa8
- 2.S1xg2#
- 2.S3xg2#
- 2.Sd5#
- 1...Qb8
- 2.S1xg2#
- 2.S3xg2#
- 2.Sd5#
- 1...Qc8
- 2.S1xg2#
- 2.S3xg2#
- 2.Sd5#
- 1...Qd8
- 2.S1xg2#
- 2.S3xg2#
- 1...Qe8
- 2.S1xg2#
- 2.S3xg2#
- 2.Sd5#
- 1...Qf8
- 2.S1xg2#
- 2.S3xg2#
- 2.Sd5#
- 1...Qh8
- 2.S1xg2#
- 2.S3xg2#
- 2.Sd5#
- 1...Bg6
- 2.S1xg2#
- 2.S3xg2#
- 1...Sg4
- 2.S1xg2#
- 2.S3xg2#
- 1...Sf7
- 2.Sd5#
- 1...Qa2!
- 1...Kxe3
- 1.Bd5?
- Keys
- 1.Qb2!
- 1...Kxe3
- 2.Qc1#
- 1...Qe6
- 2.S3xg2#
- 1...Qa2
- 2.S3xg2#
- 1...Qb3
- 2.S3xg2#
- 1...Qc4
- 2.S3xg2#
- 1...Qd5
- 2.S3xg2#
- 2.Sxd5#
- 1...Qf7
- 2.S3xg2#
- 1...Qg3
- 2.Sd5#
- 1...Qg4
- 2.Sd5#
- 1...Qg5
- 2.Sd5#
- 1...Qg6
- 2.Sd5#
- 1...Qg7
- 2.Sd5#
- 1...Qa8
- 2.S3xg2#
- 2.Sd5#
- 1...Qb8
- 2.S3xg2#
- 2.Sd5#
- 1...Qc8
- 2.S3xg2#
- 2.Sd5#
- 1...Qd8
- 2.S3xg2#
- 1...Qe8
- 2.S3xg2#
- 2.Sd5#
- 1...Qf8
- 2.S3xg2#
- 2.Sd5#
- 1...Qh8
- 2.S3xg2#
- 2.Sd5#
- 1...Bg6
- 2.S3xg2#
- 1...Sb4
- 2.Qd4#
- 2.Qe5#
- 1...Sd4
- 2.Qxd4#
- 1...Sa5
- 2.Qd4#
- 2.Qe5#
- 1...Se5
- 2.Qd4#
- 2.Qxe5#
- 1...Sa7
- 2.Qd4#
- 2.Qe5#
- 1...Se7
- 2.Qd4#
- 2.Qe5#
- 1...Sb8
- 2.Qd4#
- 2.Qe5#
- 1...Sd8
- 2.Qd4#
- 2.Qe5#
- 1...Sg4
- 2.S3xg2#
- 1...Sf7
- 2.Sd5#
- 1...Kxe3
- 1.Qb2!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 7
- Sets
- Q(g);N_GUARD::S(D),XP(a)
- Q(g);N_GUARD::S(D)
- B(f);S_CUTQ(g)::S(D),XP(a)
- S(d);N_GUARD::QAR2(F)
- S(d);N_GUARD::QAR2(F),XS(d)
- S(e);S_CUTQ(g)::S(D),XP(a)
- S(e);S_CUTQ(g)::S(D)
- Tries
- Try
- B(E);
- Threat
- S(A)
- Vars
- S(d);N_GUARD::QAR2(F),XS(d)
- S(d);N_GUARD::QAR2(F)
- Refutation
- Q(g);XB(E)
- Try
- B(E);XS(d)
- Threat
- DUALS(2)
- Vars
- Q(g);N_GUARD::S(A),XP(a)
- Refutation
- Q(g);
- Try
- Q(F);
- Vars
- Q(g);N_GUARD::S(D),XP(a)
- Q(g);N_GUARD::S(D)
- B(f);S_CUTQ(g)::S(D),XP(a)
- S(e);S_CUTQ(g)::S(D),XP(a)
- S(e);S_CUTQ(g)::S(D)
- Refutation
- Q(g);
- Try
- Q(F);CHECK
- Vars
- S(d);N_GUARD,P_SPINS(d)::QAB1(F),XS(d)
- Refutation
- K(b);S_FLIGHT,XS(D)
- Try
- Q(F);XS(d)
- Vars
- K(b);OGATEB,S_FLIGHT,XS(D)::QAB(F)
- Q(g);N_GUARD::S(D)
- S(e);S_CUTQ(g)::S(D)
- Refutation
- Q(g);
- Try
- Actual
- Q(F);
- Vars
- K(b);OGATEB,S_FLIGHT,XS(D)::QAB(F)
- Q(g);N_GUARD::S(D),XP(a)
- Q(g);N_GUARD::S(D)
- B(f);S_CUTQ(g)::S(D),XP(a)
- S(d);N_GUARD::QAR2(F),XS(d)
- S(e);S_CUTQ(g)::S(D),XP(a)
- S(e);S_CUTQ(g)::S(D)
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).