MESON Chess Problem Database
Problem Display
PID: 207262 (Q1K2n2/4Np2/3PpN2/2P1k1p1/R5p1/4p3/4P3/6q1 w - - 0 1)
Riedel, W
Schachzeitung, 1869
#2
8 + 8
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qf2
- 2.Sxg4#
- 1...Qh2
- 2.Sxg4#
- 1...Qa1
- 2.Sxg4#
- 1...Qb1
- 2.Sxg4#
- 1...Qc1
- 2.Sxg4#
- 1...Qd1
- 2.Sxg4#
- 1...Qe1
- 2.Sxg4#
- 1...Qf1
- 2.Sxg4#
- 1...Qh1
- 2.Sxg4#
- 1...Sg6
- 2.Sd7#
- 1...Sd7
- 2.Sxd7#
- 1...Sh7
- 2.Sd7#
- 1...g3
- 2.Sg4#
- 1...Qf2
- Tries
- 1.Rb4?
- 1...Qg2
- 2.Qa1#
- 1...Qf2
- 2.Sxg4#
- 2.Qa1#
- 1...Qh2
- 2.Sxg4#
- 2.Qa1#
- 1...Qa1
- 2.Sxg4#
- 2.Qxa1#
- 1...Qb1
- 2.Sxg4#
- 1...Qc1
- 2.Sxg4#
- 1...Qd1
- 2.Sxg4#
- 1...Qe1
- 2.Sxg4#
- 1...Qf1
- 2.Sxg4#
- 1...Qh1
- 2.Sxg4#
- 1...Qg3
- 2.Qa1#
- 1...Sg6
- 2.Sd7#
- 1...Sd7
- 2.Sxd7#
- 1...Sh7
- 2.Sd7#
- 1...g3
- 2.Sg4#
- 1...Kxf6!
- 1...Qg2
- 1.Rc4?
- 1...Qg2
- 2.Qa1#
- 1...Qf2
- 2.Sxg4#
- 2.Qa1#
- 1...Qh2
- 2.Sxg4#
- 2.Qa1#
- 1...Qa1
- 2.Sxg4#
- 2.Qxa1#
- 1...Qb1
- 2.Sxg4#
- 1...Qc1
- 2.Sxg4#
- 1...Qd1
- 2.Sxg4#
- 1...Qe1
- 2.Sxg4#
- 1...Qf1
- 2.Sxg4#
- 1...Qh1
- 2.Sxg4#
- 1...Qg3
- 2.Qa1#
- 1...Sg6
- 2.Sd7#
- 1...Sd7
- 2.Sxd7#
- 1...Sh7
- 2.Sd7#
- 1...g3
- 2.Sg4#
- 1...Kxf6!
- 1...Qg2
- 1.Qf3?
- threat
- 2.Sc6#
- 2.Re4#
- 1...Qb1
- 2.Sxg4#
- 2.Sc6#
- 1...gxf3!
- threat
- 1.Qb7?
- threat
- 2.Qb2#
- 1...Qa1
- 2.Sxg4#
- 1...Qb1
- 2.Sxg4#
- 1...Qc1
- 2.Sxg4#
- 1...Qd1
- 2.Sxg4#
- 1...Qe1
- 2.Sxg4#
- 1...Kxf6!
- threat
- 1.Qa5?
- threat
- 2.Qc3#
- 1...Qa1
- 2.Sxg4#
- 1...Qc1
- 2.Sxg4#
- 1...Qd1
- 2.Sxg4#
- 1...Qe1
- 2.Sxg4#
- 1...Kxf6!
- threat
- 1.Qb8?
- threat
- 2.Qb2#
- 1...Qa1
- 2.Sxg4#
- 1...Qb1
- 2.Sxg4#
- 1...Qc1
- 2.Sxg4#
- 1...Qd1
- 2.Sxg4#
- 1...Qe1
- 2.Sxg4#
- 1...Kxf6!
- threat
- 1.Rb4?
- Keys
- 1.Qh1!
- 1...Kxf6
- 2.Qh8#
- 1...Qxh1
- 2.Sxg4#
- 1...Qg2
- 2.Qa1#
- 1...Qf2
- 2.Sxg4#
- 2.Qa1#
- 1...Qh2
- 2.Sxg4#
- 2.Qa1#
- 1...Qa1
- 2.Sxg4#
- 2.Qxa1#
- 1...Qb1
- 2.Sxg4#
- 1...Qc1
- 2.Sxg4#
- 1...Qd1
- 2.Sxg4#
- 1...Qe1
- 2.Sxg4#
- 1...Qf1
- 2.Sxg4#
- 1...Qg3
- 2.Qa1#
- 1...Sg6
- 2.Sd7#
- 1...Sd7
- 2.Sxd7#
- 1...Sh7
- 2.Sd7#
- 1...g3
- 2.Sg4#
- 1...Kxf6
- 1.Qh1!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 3
- Sets
- Q(a);N_GUARD::S(E),XP(c)
- Q(a);N_GUARD,P_PINP(C)::S(E),XP(c)
- S(h);N_GUARD::S(E)
- S(h);N_GUARD::S(E),XS(h)
- P(c);S_CUTQ(a)::S(E)
- Tries
- Try
- R(B);
- Vars
- Q(a);N_GUARD::QAB(G)
- Q(a);N_GUARD::S(E),XP(c)
- Q(a);N_GUARD,P_PINP(C)::S(E),XP(c)
- S(h);N_GUARD::S(E)
- S(h);N_GUARD::S(E),XS(h)
- P(c);S_CUTQ(a)::S(E)
- Refutation
- K(d);S_FLIGHT,XS(E)
- Try
- R(B);
- Vars
- Q(a);N_GUARD::QAB(G)
- Q(a);N_GUARD::S(E),XP(c)
- S(h);N_GUARD::S(E)
- S(h);N_GUARD::S(E),XS(h)
- P(c);S_CUTQ(a)::S(E)
- Refutation
- K(d);S_FLIGHT,XS(E)
- Try
- Q(G);
- Threat
- DUALS(2)
- Refutation
- P(c);XQ(G)
- Try
- Q(G);
- Threat
- QAB(G)
- Vars
- Q(a);N_GUARD::S(E),XP(c)
- Q(a);N_GUARD,P_PINP(C)::S(E),XP(c)
- Refutation
- K(d);S_FLIGHT,XS(E)
- Try
- Q(G);
- Threat
- QAB(G)
- Vars
- Q(a);N_GUARD::S(E),XP(c)
- Q(a);N_GUARD,P_PINP(C)::S(E),XP(c)
- Refutation
- K(d);S_FLIGHT,XS(E)
- Try
- Q(G);
- Threat
- QAB(G)
- Vars
- Q(a);N_GUARD::S(E),XP(c)
- Q(a);N_GUARD,P_PINP(C)::S(E),XP(c)
- Refutation
- K(d);S_FLIGHT,XS(E)
- Try
- Actual
- Q(G);
- Vars
- K(d);OGATEB,S_FLIGHT,XS(E)::QAB(G)
- Q(a);N_GUARD,XQ(G)::S(E),XP(c)
- Q(a);OGATE::QAB(G)
- Q(a);N_GUARD::S(E),XP(c)
- Q(a);N_GUARD,P_PINP(C)::S(E),XP(c)
- S(h);N_GUARD::S(E)
- S(h);N_GUARD::S(E),XS(h)
- P(c);S_CUTQ(a)::S(E)
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).