MESON Chess Problem Database

Problem Display
PID: 169236 (8/5n2/5KRN/7k/7p/8/6P1/8 w - - 0 1)

Muller, Dieter

SuperProblem 181. TT, 2017

8/5n2/5KRN/7k/7p/8/6P1/8

#2

4 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sxh6
      • 2.Rg5#
  • Tries
    • 1.Sg4?
      • 1...Sg5
        • 2.Rxg5#
      • 1...Se5
        • 2.Rg5#
      • 1...Sd6
        • 2.Rg5#
      • 1...Sh6
        • 2.Rg5#
      • 1...Sd8
        • 2.Rg5#
      • 1...Sh8
        • 2.Rg5#
      • 1...h3!
    • 1.Sg8?
      • 1...Sg5
        • 2.Rxg5#
      • 1...Se5
        • 2.Rg5#
      • 1...Sd6
        • 2.Rg5#
      • 1...Sh6
        • 2.Rg5#
      • 1...Sd8
        • 2.Rg5#
      • 1...Sh8
        • 2.Rg5#
      • 1...h3!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Sg7#
      • 1...Sg5
        • 2.Rxg5#
      • 1...h3
        • 2.g4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • S(c);N_GUARD,SBLOCK,XS(D)::R1(C)
  • Tries
    • Try
      • S(D);
      • Vars
        • S(c);N_GUARD::R1(C),XS(c)
        • S(c);N_GUARD::R1(C)
      • Refutation
        • P(a);
    • Try
      • S(D);
      • Vars
        • S(c);N_GUARD::R1(C),XS(c)
        • S(c);N_GUARD::R1(C)
      • Refutation
        • P(a);
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • S(c);N_GUARD::R1(C),XS(c)
      • P(a);N_GUARD::P(A)
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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).