MESON Chess Problem Database

Problem Display
PID: 175233 (8/6r1/7Q/4pk2/6R1/8/3N1K2/8 w - - 0 1)

Dutschke, Rudolf

Deutsches Wochenschach, 1902

8/6r1/7Q/4pk2/6R1/8/3N1K2/8

#2

4 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rg6
      • 2.Qxg6#
    • 1...Ra7
      • 2.Qg6#
    • 1...Rb7
      • 2.Qg6#
    • 1...Rc7
      • 2.Qg6#
    • 1...Rd7
      • 2.Qg6#
    • 1...Re7
      • 2.Qg6#
    • 1...Rf7
      • 2.Qg6#
    • 1...Rh7
      • 2.Qg6#
  • Tries
    • 1.Rg5+?
      • 1...Kf4
        • 2.Qh4#
        • 2.Qf6#
      • 1...Rxg5!
  • Keys
    • 1.Sc4!
      • threat
        • 2.Se3#
      • 1...Kxg4
        • 2.Se3#
      • 1...Rxg4
        • 2.Sd6#
      • 1...Rg6
        • 2.Qxg6#
      • 1...e4
        • 2.Rf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • R(c);N_GUARD::QAB1(D),XR(c)
    • R(c);N_GUARD::QAB1(D)
  • Tries
    • Try
      • R(C);CHECK
      • Refutation
        • R(c);XR(C)
  • Actual
    • S(A);
    • Threat
      • S(A)
    • Vars
      • K(b);S_FLIGHT,XR(C)::S(A)
      • R(c);SBLOCK,XR(C)::S(A)
      • R(c);N_GUARD::QAB1(D),XR(c)
      • P(a);N_GUARD::R1(C)
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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).