MESON Chess Problem Database
Problem Display
PID: 153765 (8/4B3/3NpN2/1pn1k1np/3pPp2/4R3/8/1K2Q3 w - - 0 1)
Shire, David J
The Problemist Supplement, 2014
#2
7 + 8
SOLUTION
- SOUND
- Sets
- 1...Sb3
- 2.Sd7#
- 1...Sd3
- 2.Sd7#
- 1...Sa4
- 2.Sd7#
- 1...Sa6
- 2.Sd7#
- 1...Sb7
- 2.Sd7#
- 1...Sd7
- 2.Sxd7#
- 1...Sf3
- 2.Sf7#
- 1...Sh3
- 2.Sf7#
- 1...Sf7
- 2.Sxf7#
- 1...Sh7
- 2.Sf7#
- 1...dxe3
- 2.Qc3#
- 1...d3
- 2.Qc3#
- 1...fxe3
- 2.Qg3#
- 1...f3
- 2.Qg3#
- 1...b4
- 2.Sc4#
- 1...h4
- 2.Sg4#
- 1...Sb3
- Tries
- 1.Rb3?
- 1...Sxb3
- 2.Sd7#
- 1...Scxe4
- 2.Rxb5#
- 1...d3
- 2.Qc3#
- 1...f3
- 2.Qg3#
- 1...Sd3
- 2.Sd7#
- 1...Sa4
- 2.Sd7#
- 1...Sa6
- 2.Sd7#
- 1...Sb7
- 2.Sd7#
- 1...Sd7
- 2.Sxd7#
- 1...Sf3
- 2.Sf7#
- 1...Sh3
- 2.Sf7#
- 1...Sf7
- 2.Sxf7#
- 1...Sh7
- 2.Sf7#
- 1...b4
- 2.Sc4#
- 1...h4
- 2.Sg4#
- 1...Sgxe4!
- 1...Sxb3
- 1.Rc3?
- threat
- 2.Rxc5#
- 1...Scxe4
- 2.Rc5#
- 1...dxc3
- 2.Qxc3#
- 1...f3
- 2.Qg3#
- 1...Sb3
- 2.Sd7#
- 1...Sd3
- 2.Sd7#
- 1...Sa4
- 2.Sd7#
- 1...Sa6
- 2.Sd7#
- 1...Sb7
- 2.Sd7#
- 1...Sd7
- 2.Sxd7#
- 1...d3!
- threat
- 1.Rg3?
- threat
- 2.Rxg5#
- 1...Sgxe4
- 2.Rg5#
- 1...fxg3
- 2.Qxg3#
- 1...d3
- 2.Qc3#
- 1...Sf3
- 2.Sf7#
- 1...Sh3
- 2.Sf7#
- 1...Sf7
- 2.Sxf7#
- 1...Sh7
- 2.Sf7#
- 1...f3!
- threat
- 1.Rh3?
- 1...Sxh3
- 2.Sf7#
- 1...Sgxe4
- 2.Rxh5#
- 1...d3
- 2.Qc3#
- 1...f3
- 2.Qg3#
- 1...Sb3
- 2.Sd7#
- 1...Sd3
- 2.Sd7#
- 1...Sa4
- 2.Sd7#
- 1...Sa6
- 2.Sd7#
- 1...Sb7
- 2.Sd7#
- 1...Sd7
- 2.Sxd7#
- 1...Sf3
- 2.Sf7#
- 1...Sf7
- 2.Sxf7#
- 1...Sh7
- 2.Sf7#
- 1...b4
- 2.Sc4#
- 1...h4
- 2.Sg4#
- 1...Scxe4!
- 1...Sxh3
- 1.Rb3?
- Keys
- 1.Qe2!
- 1...Scxe4
- 2.Qxb5#
- 1...Sgxe4
- 2.Qxh5#
- 1...dxe3
- 2.Qb2#
- 1...fxe3
- 2.Qh2#
- 1...d3
- 2.Qb2#
- 1...f3
- 2.Qh2#
- 1...Sb3
- 2.Sd7#
- 1...Sd3
- 2.Sd7#
- 1...Sa4
- 2.Sd7#
- 1...Sa6
- 2.Sd7#
- 1...Sb7
- 2.Sd7#
- 1...Sd7
- 2.Sxd7#
- 1...Sf3
- 2.Sf7#
- 1...Sh3
- 2.Sf7#
- 1...Sf7
- 2.Sxf7#
- 1...Sh7
- 2.Sf7#
- 1...b4
- 2.Sc4#
- 1...h4
- 2.Sg4#
- 1...Scxe4
- 1.Qe2!
This is a version of 2518
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 4
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- S(d);N_GUARD::S(F)
- S(d);N_GUARD::S(F),XS(d)
- S(f);N_GUARD::S(E)
- S(f);N_GUARD::S(E),XS(f)
- P(a);OGATEB,XR(C)::QAB(B)
- P(a);OGATEB::QAB(B)
- P(b);OGATEB,XR(C)::QAB(B)
- P(b);OGATEB::QAB(B)
- P(c);N_GUARD::S(E)
- P(g);N_GUARD::S(F)
- Tries
- Try
- R(C);
- Vars
- S(d);N_GUARD,XR(C)::S(F)
- S(d);OGATEB,P_SPINS(d),XP(D)::R(C),XP(c)
- P(a);OGATEB::QAB(B)
- P(b);OGATEB::QAB(B)
- S(d);N_GUARD::S(F)
- S(d);N_GUARD::S(F),XS(d)
- S(f);N_GUARD::S(E)
- S(f);N_GUARD::S(E),XS(f)
- P(c);N_GUARD::S(E)
- P(g);N_GUARD::S(F)
- Refutation
- S(f);P_SPINS(f),XP(D)
- Try
- R(C);
- Threat
- R(C),XS(d)
- Vars
- S(d);P_SPINS(d),XP(D)::R(C)
- P(a);OGATE,XR(C)::QAB(B),XP(a)
- P(b);OGATEB::QAB(B)
- S(d);N_GUARD::S(F)
- S(d);N_GUARD::S(F),XS(d)
- Refutation
- P(a);
- Try
- R(C);
- Threat
- R(C),XS(f)
- Vars
- S(f);P_SPINS(f),XP(D)::R(C)
- P(b);OGATE,XR(C)::QAB(B),XP(b)
- P(a);OGATEB::QAB(B)
- S(f);N_GUARD::S(E)
- S(f);N_GUARD::S(E),XS(f)
- Refutation
- P(b);
- Try
- R(C);
- Vars
- S(f);N_GUARD,XR(C)::S(E)
- S(f);OGATEB,P_SPINS(f),XP(D)::R(C),XP(g)
- P(a);OGATEB::QAB(B)
- P(b);OGATEB::QAB(B)
- S(d);N_GUARD::S(F)
- S(d);N_GUARD::S(F),XS(d)
- S(f);N_GUARD::S(E)
- S(f);N_GUARD::S(E),XS(f)
- P(c);N_GUARD::S(E)
- P(g);N_GUARD::S(F)
- Refutation
- S(d);P_SPINS(d),XP(D)
- Try
- Actual
- Q(B);
- Vars
- S(d);OGATEB,P_SPINS(d),XP(D)::QAR(B),XP(c)
- S(f);OGATEB,P_SPINS(f),XP(D)::QAR(B),XP(g)
- P(a);OGATEB,XR(C)::QAB(B)
- P(b);OGATEB,XR(C)::QAB(B)
- P(a);OGATEB::QAB(B)
- P(b);OGATEB::QAB(B)
- S(d);N_GUARD::S(F)
- S(d);N_GUARD::S(F),XS(d)
- S(f);N_GUARD::S(E)
- S(f);N_GUARD::S(E),XS(f)
- P(c);N_GUARD::S(E)
- P(g);N_GUARD::S(F)
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).