MESON Chess Problem Database

Problem Display
PID: 52794 (8/Q7/3pN1R1/4p3/4k3/1P5P/7P/4K3 w - - 0 1)

Erlin, Konrad (AKA Erlinger, Konrad)

Source?, 0000

8/Q7/3pN1R1/4p3/4k3/1P5P/7P/4K3

#2

7 + 3

328 Schweizerische Schachzeitung 1901

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Qb7#
      • 2.Qa8#
  • Tries
    • 1.Qd4+?
      • 1...Kf3
        • 2.Rg3#
        • 2.Qd3#
      • 1...Kf5
        • 2.Qg4#
      • 1...exd4!
    • 1.Qa4+?
      • 1...Ke3
        • 2.Rg3#
      • 1...Kf3
        • 2.Rg3#
      • 1...Kd5
        • 2.Qc4#
        • 2.Qa8#
      • 1...Kf5
        • 2.Qg4#
      • 1...Kd3!
  • Keys
    • 1.Qh7!
      • 1...Kd3
        • 2.Rg3#
      • 1...Ke3
        • 2.Rg3#
      • 1...Kf3
        • 2.Rg3#
      • 1...Kd5
        • 2.Qb7#
      • 1...Kf5
        • 2.Rh6#
      • 1...d5
        • 2.Rg3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(G);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(G)
      • Refutation
        • P(b);XQ(G)
    • Try
      • Q(G);CHECK
      • Vars
        • K(a);P-FLIGHT::R(F)
        • K(a);S_FLIGHT::R1(F)
        • K(a);OGATE,S_FLIGHT::QAB1(G)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(G);
    • Vars
      • K(a);S_FLIGHT::QAB(G)+R(F),DCHECK
      • K(a);P-FLIGHT::R(F)
      • K(a);S_FLIGHT::R1(F)
      • K(a);S_FLIGHT::QAB(G)
      • K(a);S_FLIGHT::QAB(G)+R(F)
      • P(c);SBLOCK::QAB(G)+R(F)
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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).