MESON Chess Problem Database

Problem Display
PID: 2075 (3k4/R6R/3n4/8/8/3K4/8/8 w - - 0 1)

Bonus Socius

Source?, 1350

3k4/R6R/3n4/8/8/3K4/8/8

#2

3 + 2

14907 Good Companion Chess Problem Club 1914
887 Mate in Two Moves 1931
2012 Miniature Chess Problems from Many Countries 1981
5658 Beispiele zur Ideengeschichte des Schachproblems (Josef Breuer) 1982
3295 Einfuhrung in die Welt des Schachproblem 1984
3979 Systematic Terminology 1984
3310 2345 Chess Problems 1997
5454 Near Snap 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Kc8
      • 2.Ra8#
    • 1...Ke8
      • 2.Rh8#
    • 1...Sc4
      • 2.Ra8#
      • 2.Rh8#
    • 1...Se4
      • 2.Ra8#
      • 2.Rh8#
    • 1...Sb5
      • 2.Ra8#
      • 2.Rh8#
    • 1...Sf5
      • 2.Ra8#
      • 2.Rh8#
    • 1...Sb7
      • 2.Ra8#
    • 1...Sc8
      • 2.Rh8#
    • 1...Se8
      • 2.Ra8#
  • Tries
    • 1.Kc2?
      • 1...Kc8
        • 2.Ra8#
      • 1...Ke8
        • 2.Rh8#
      • 1...Sc4
        • 2.Ra8#
        • 2.Rh8#
      • 1...Se4
        • 2.Ra8#
        • 2.Rh8#
      • 1...Sb5
        • 2.Ra8#
        • 2.Rh8#
      • 1...Sf5
        • 2.Ra8#
        • 2.Rh8#
      • 1...Sb7
        • 2.Ra8#
      • 1...Sc8
        • 2.Rh8#
      • 1...Se8
        • 2.Ra8#
      • 1...Sf7!
    • 1.Ke2?
      • 1...Kc8
        • 2.Ra8#
      • 1...Ke8
        • 2.Rh8#
      • 1...Sc4
        • 2.Ra8#
        • 2.Rh8#
      • 1...Se4
        • 2.Ra8#
        • 2.Rh8#
      • 1...Sb5
        • 2.Ra8#
        • 2.Rh8#
      • 1...Sf5
        • 2.Ra8#
        • 2.Rh8#
      • 1...Sb7
        • 2.Ra8#
      • 1...Sc8
        • 2.Rh8#
      • 1...Se8
        • 2.Ra8#
      • 1...Sf7!
  • Keys
    • 1.Rhg7!
      • 1...Kc8
        • 2.Ra8#
      • 1...Ke8
        • 2.Rg8#
      • 1...Sf7
        • 2.Rg8#
      • 1...Sc4
        • 2.Ra8#
        • 2.Rg8#
      • 1...Se4
        • 2.Ra8#
        • 2.Rg8#
      • 1...Sb5
        • 2.Ra8#
        • 2.Rg8#
      • 1...Sf5
        • 2.Ra8#
        • 2.Rg8#
      • 1...Sb7
        • 2.Ra8#
      • 1...Sc8
        • 2.Rg8#
      • 1...Se8
        • 2.Ra8#

This anticipates 4672(1886), 132734(1958), 11700(1971)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT::R(B)
    • K(b);P-FLIGHT::R(C)
    • S(a);N_GUARD::R(B)
    • S(a);N_GUARD,SBLOCK::R(C)
    • S(a);N_GUARD,SBLOCK::R(B)
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Vars
        • K(b);P-FLIGHT::R(B)
        • K(b);P-FLIGHT::R(C)
        • S(a);N_GUARD::R(B)
        • S(a);N_GUARD,SBLOCK::R(C)
        • S(a);N_GUARD,SBLOCK::R(B)
      • Refutation
        • S(a);
    • Try
      • K(A);S_FLIGHT
      • Vars
        • K(b);P-FLIGHT::R(B)
        • K(b);P-FLIGHT::R(C)
        • S(a);N_GUARD::R(B)
        • S(a);N_GUARD,SBLOCK::R(C)
        • S(a);N_GUARD,SBLOCK::R(B)
      • Refutation
        • S(a);
  • Actual
    • R(C);
    • Vars
      • K(b);P-FLIGHT::R(B)
      • K(b);P-FLIGHT::R(C)
      • S(a);N_GUARD::R(C)
      • S(a);N_GUARD::R(B)
      • S(a);N_GUARD,SBLOCK::R(C)
      • S(a);N_GUARD,SBLOCK::R(B)
HTML5 logo

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).