MESON Chess Problem Database

Problem Display
PID: 227835 (4Q3/8/6N1/6k1/3K2P1/8/8/6R1 w - - 0 1)

Goldschmidt, Ervin

Nepszava, 1926

4Q3/8/6N1/6k1/3K2P1/8/8/6R1

#2

5 + 1

6490 yacpdb 2020
5454 Near Snap 2023

SOLUTION

  • SOUND
  • Tries
    • 1.Sf4?
      • 1...Kxf4
        • 2.Qe3#
      • 1...Kh4
        • 2.Qh5#
        • 2.Qe7#
        • 2.Qd8#
      • 1...Kh6
        • 2.Qg6#
      • 1...Kf6!
    • 1.Sh4?
      • 1...Kf4
        • 2.Qe3#
        • 2.Qe5#
      • 1...Kxh4
        • 2.Qh5#
      • 1...Kh6
        • 2.Qg6#
      • 1...Kf6!
    • 1.Sf8?
      • 1...Kf4
        • 2.Qe3#
      • 1...Kh4
        • 2.Qh5#
      • 1...Kh6
        • 2.Qg6#
      • 1...Kf6!
  • Keys
    • 1.Sh8!
      • 1...Kf4
        • 2.Qe3#
      • 1...Kh4
        • 2.Qh5#
      • 1...Kf6
        • 2.Qe5#
      • 1...Kh6
        • 2.Qg6#

This anticipates 15592(1986)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);
      • Vars
        • K(a);OGATEB,S_FLIGHT,XS(D)::QAB1(E)
        • K(a);S_FLIGHT::QAR1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(D);
      • Vars
        • K(a);S_FLIGHT,XS(D)::QAR1(E)
        • K(a);S_FLIGHT::QAR1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(D);
      • Vars
        • K(a);S_FLIGHT::QAB1(E)
        • K(a);S_FLIGHT::QAR1(E)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(D);
    • Vars
      • K(a);S_FLIGHT::QAB1(E)
      • K(a);S_FLIGHT::QAR1(E)
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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).