MESON Chess Problem Database
Problem Display
PID: 185718 (bn6/1q6/n7/2pB1NP1/2P2Pp1/3Q2B1/3PPKp1/7k w - - 0 1)
Stubbs, Arthur Goodwin
The Observer, 1931
(First published on Sun May 24 1931)
#2
10 + 8
| 15239 | Valois Notebooks | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Qc6
- 2.Qb1#
- 1...Qc8
- 2.Qb1#
- 1...Qb1
- 2.Qxb1#
- 1...Qa7
- 2.Qb1#
- 1...Qc7
- 2.Qb1#
- 1...Qd7
- 2.Qb1#
- 1...Qe7
- 2.Qb1#
- 1...Qf7
- 2.Qb1#
- 1...Qg7
- 2.Qb1#
- 1...Qh7
- 2.Qb1#
- 1...Sb4
- 2.Qb1#
- 1...Sc6
- 2.Bxg2#
- 1...Qc6
- Tries
- 1.Se3?
- 1...Qxd5
- 2.Qh7#
- 1...Qc6
- 2.Qb1#
- 1...Qc8
- 2.Qb1#
- 2.Qh7#
- 1...Qb1
- 2.Qxb1#
- 1...Qb2
- 2.Qh7#
- 1...Qb3
- 2.Qh7#
- 1...Qb4
- 2.Qh7#
- 1...Qb5
- 2.Qh7#
- 1...Qa7
- 2.Qb1#
- 1...Qc7
- 2.Qb1#
- 1...Qd7
- 2.Qb1#
- 1...Qe7
- 2.Qb1#
- 1...Qf7
- 2.Qb1#
- 1...Qg7
- 2.Qb1#
- 1...Qh7
- 2.Qxh7#
- 1...Sb4
- 2.Qb1#
- 1...Sc7
- 2.Qh7#
- 1...Sc6
- 2.Bxg2#
- 1...Sd7
- 2.Qh7#
- 1...Qb6!
- 1...Qxd5
- 1.Se7?
- threat
- 2.Qh7#
- 1...Qxe7
- 2.Qb1#
- 1...Qc6
- 2.Qb1#
- 1...Qb1
- 2.Qxb1#
- 1...Qb6!
- threat
- 1.Sg7?
- threat
- 2.Qh7#
- 1...Qxg7
- 2.Qb1#
- 1...Qc6
- 2.Qb1#
- 1...Qb1
- 2.Qxb1#
- 1...Qf7
- 2.Qb1#
- 1...Qb6!
- threat
- 1.Qc3?
- threat
- 2.Qc1#
- 1...Qxd5
- 2.Qh8#
- 1...Qb1
- 2.Qh8#
- 1...Qb3
- 2.Qh8#
- 1...Qb2!
- threat
- 1.e3?
- threat
- 2.Qf1#
- 1...Qb1
- 2.Qxb1#
- 1...Qxd5!
- threat
- 1.Se3?
- Keys
- 1.Sd6!
- 1...Qxd5
- 2.Qh7#
- 1...Qb6
- 2.Qh7#
- 1...Qc6
- 2.Qb1#
- 2.Qh7#
- 1...Qc8
- 2.Qb1#
- 2.Qh7#
- 1...Qb1
- 2.Qxb1#
- 1...Qb2
- 2.Qh7#
- 1...Qb3
- 2.Qh7#
- 1...Qb4
- 2.Qh7#
- 1...Qb5
- 2.Qh7#
- 1...Qa7
- 2.Qb1#
- 1...Qc7
- 2.Qb1#
- 1...Qd7
- 2.Qb1#
- 1...Qe7
- 2.Qb1#
- 1...Qf7
- 2.Qb1#
- 1...Qg7
- 2.Qb1#
- 1...Qh7
- 2.Qxh7#
- 1...Sb4
- 2.Qb1#
- 1...Sc7
- 2.Qh7#
- 1...Sc6
- 2.Bxg2#
- 1...Sd7
- 2.Qh7#
- 1...Qxd5
- 1.Sd6!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 8
- REMOVED MATES = 2
- Sets
- Q(f);N_GUARD::QAR(D)
- Q(f);N_GUARD::QAR(D),XQ(f)
- S(e);S_CUTQ(f)::QAR(D)
- S(h);S_CUTQ(f)::B(H),XP(b)
- Tries
- Try
- S(I);
- Vars
- Q(f);N_GUARD,N_SPINP(b),XB(H)::QAR(D)
- Q(f);N_GUARD::QAR(D)
- Q(f);N_GUARD::QAR(D),XQ(f)
- Q(f);N_GUARD,P_PINP(G)::QAR(D)
- S(e);S_CUTQ(f)::QAR(D)
- S(h);S_CUTQ(f)::B(H),XP(b)
- S(h);S_CUTQ(f)::QAR(D)
- Refutation
- Q(f);
- Try
- S(I);
- Threat
- QAR(D)
- Vars
- Q(f);N_GUARD,XS(I)::QAR(D)
- Q(f);N_GUARD::QAR(D)
- Q(f);N_GUARD::QAR(D),XQ(f)
- Refutation
- Q(f);
- Try
- S(I);
- Threat
- QAR(D)
- Vars
- Q(f);N_GUARD,XS(I)::QAR(D)
- Q(f);N_GUARD::QAR(D)
- Q(f);N_GUARD::QAR(D),XQ(f)
- Q(f);N_GUARD,P_PINP(G)::QAR(D)
- Refutation
- Q(f);
- Try
- Q(D);
- Threat
- QAR(D)
- Vars
- Q(f);N_GUARD,N_SPINP(b),XB(H)::QAB(D)
- Q(f);N_GUARD::QAB(D)
- Refutation
- Q(f);
- Try
- P(B);
- Threat
- QAR2(D)
- Vars
- Q(f);N_GUARD::QAR(D),XQ(f)
- Refutation
- Q(f);N_SPINP(b),XB(H)
- Try
- Actual
- S(I);
- Vars
- Q(f);N_GUARD,N_SPINP(b),XB(H)::QAR(D)
- Q(f);N_GUARD::QAR(D)
- Q(f);N_GUARD::QAR(D),XQ(f)
- Q(f);N_GUARD,P_PINP(G)::QAR(D)
- S(e);S_CUTQ(f)::QAR(D)
- S(h);S_CUTQ(f)::B(H),XP(b)
- S(h);S_CUTQ(f)::QAR(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).