MESON Chess Problem Database
Problem Display
PID: 59061 (K7/3Q4/8/5R2/8/bN1np2N/4k3/1n5R w - - 0 1)
Brotherton, David WA
3rd Comm., The Problemist, 1962
#2
6 + 5
| 136 | Problem Observer | 2005 |
SOLUTION
- SOUND
- Sets
- 1...Sd2
- 2.Sd4#
- 1...Sc1
- 2.Qd1#
- 1...Se1
- 2.Sg1#
- 1...Sb2
- 2.Sc1#
- 1...Sb4
- 2.Qd1#
- 1...Sf4
- 2.Qd1#
- 1...Sc5
- 2.Qd1#
- 1...Se5
- 2.Qd1#
- 1...Sd2
- Tries
- 1.Sc1+?
- 1...Kd2
- 2.Qxd3#
- 1...Sxc1
- 2.Qd1#
- 1...Bxc1!
- 1...Kd2
- 1.Re1+?
- 1...Sxe1
- 2.Sg1#
- 1...Kxe1!
- 1...Sxe1
- 1.Rhf1?
- threat
- 2.Sg1#
- 1...Sf4
- 2.Qd1#
- 1...Sf2!
- threat
- 1.Rff1?
- threat
- 2.Qg4#
- 1...Sd2
- 2.Sd4#
- 1...Sc1
- 2.Sf4#
- 2.Qd1#
- 1...Se1
- 2.Sf4#
- 1...Sb2
- 2.Sc1#
- 2.Sf4#
- 1...Sb4
- 2.Sf4#
- 2.Qd1#
- 1...Sf4
- 2.Sxf4#
- 2.Qd1#
- 1...Sc5
- 2.Sf4#
- 2.Qd1#
- 1...Se5
- 2.Sf4#
- 2.Qd1#
- 1...Sf2!
- threat
- 1.Rf4?
- threat
- 2.Qg4#
- 1...Sxf4
- 2.Qd1#
- 1...Sd2
- 2.Sd4#
- 1...Sc1
- 2.Qd1#
- 1...Se1
- 2.Sg1#
- 1...Sb2
- 2.Sc1#
- 1...Sb4
- 2.Qd1#
- 1...Sc5
- 2.Qd1#
- 1...Se5
- 2.Qd1#
- 1...Sf2!
- threat
- 1.Rf6?
- threat
- 2.Qg4#
- 1...Sf4
- 2.Qd1#
- 1...Sd2
- 2.Sd4#
- 1...Sc1
- 2.Qd1#
- 1...Se1
- 2.Sg1#
- 1...Sb2
- 2.Sc1#
- 1...Sb4
- 2.Qd1#
- 1...Sc5
- 2.Qd1#
- 1...Se5
- 2.Qd1#
- 1...Sf2!
- threat
- 1.Rf7?
- threat
- 2.Qg4#
- 1...Sf4
- 2.Qd1#
- 1...Sd2
- 2.Sd4#
- 1...Sc1
- 2.Qd1#
- 1...Se1
- 2.Sg1#
- 1...Sb2
- 2.Sc1#
- 1...Sb4
- 2.Qd1#
- 1...Sc5
- 2.Qd1#
- 1...Se5
- 2.Qd1#
- 1...Sf2!
- threat
- 1.Rf8?
- threat
- 2.Qg4#
- 1...Sf4
- 2.Qd1#
- 1...Sd2
- 2.Sd4#
- 1...Sc1
- 2.Qd1#
- 1...Se1
- 2.Sg1#
- 1...Sb2
- 2.Sc1#
- 1...Sb4
- 2.Qd1#
- 1...Sc5
- 2.Qd1#
- 1...Se5
- 2.Qd1#
- 1...Sf2!
- threat
- 1.Sc1+?
- Keys
- 1.Qd5!
- threat
- 2.Qf3#
- 1...Sd2
- 2.Sd4#
- 1...Sc1
- 2.Qd1#
- 1...Se1
- 2.Sg1#
- 1...Sb2
- 2.Sc1#
- 1...Sf2
- 2.Sf4#
- 1...Sb4
- 2.Qd1#
- 1...Sf4
- 2.Qd1#
- 1...Sc5
- 2.Qd1#
- 1...Se5
- 2.Qd1#
- threat
- 1.Qd5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- S(a);SBLOCK::S(B)
- S(d);OGATE::QAB1(E)
- S(d);SBLOCK::S(C)
- S(d);N_GUARD,S_CUTB(c)::S(B)
- Tries
- Try
- S(B);CHECK
- Vars
- K(b);P-FLIGHT,P_SPINS(d)::QAR1(E),XS(d)
- S(d);OGATE,XS(B)::QAB1(E)
- Refutation
- B(c);XS(B)
- Try
- R(A);CHECK
- Vars
- S(d);SBLOCK,XR(A)::S(C)
- Refutation
- K(b);P-FLIGHT,XR(A)
- Try
- R(A);
- Threat
- S(C)
- Vars
- S(d);OGATE::QAB1(E)
- Refutation
- S(d);
- Try
- R(D);
- Threat
- QAB(E)
- Vars
- S(a);SBLOCK::S(B)
- S(d);N_GUARD::S(C)
- Refutation
- S(d);
- Try
- R(D);
- Threat
- QAB(E)
- Vars
- S(d);OGATE,XR(D)::QAB1(E)
- S(a);SBLOCK::S(B)
- S(d);OGATE::QAB1(E)
- S(d);SBLOCK::S(C)
- S(d);N_GUARD,S_CUTB(c)::S(B)
- Refutation
- S(d);
- Try
- R(D);
- Threat
- QAB(E)
- Vars
- S(d);OGATE::QAB1(E)
- S(a);SBLOCK::S(B)
- S(d);SBLOCK::S(C)
- S(d);N_GUARD,S_CUTB(c)::S(B)
- Refutation
- S(d);
- Try
- R(D);
- Threat
- QAB(E)
- Vars
- S(d);OGATE::QAB1(E)
- S(a);SBLOCK::S(B)
- S(d);SBLOCK::S(C)
- S(d);N_GUARD,S_CUTB(c)::S(B)
- Refutation
- S(d);
- Try
- R(D);
- Threat
- QAB(E)
- Vars
- S(d);OGATE::QAB1(E)
- S(a);SBLOCK::S(B)
- S(d);SBLOCK::S(C)
- S(d);N_GUARD,S_CUTB(c)::S(B)
- Refutation
- S(d);
- Try
- Actual
- Q(E);
- Threat
- QAB1(E)
- Vars
- S(a);SBLOCK::S(B)
- S(d);OGATE::QAB1(E)
- S(d);SBLOCK::S(C)
- S(d);N_GUARD,S_CUTB(c)::S(B)
- S(d);N_GUARD,SBLOCK::S(C)
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).