MESON Chess Problem Database

Problem Display
PID: 241775 (7B/6P1/6P1/4K1k1/8/7Q/8/8 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1928

7B/6P1/6P1/4K1k1/8/7Q/8/8

#2

5 + 1

15148 Sadier Collection 2021
3713 Snap 2024

SOLUTION

  • SOUND
  • Sets
    • 1...Kxg6
      • 2.g8Q#
  • Tries
    • 1.Ke4?
      • 1...Kxg6
        • 2.g8Q#
      • 1...Kf6!
    • 1.Ke6?
      • 1...Kxg6
        • 2.g8Q#
        • 2.g8R#
      • 1...Kf4!
    • 1.Qg4+?
      • 1...Kh6
        • 2.g8S#
      • 1...Kxg4!
    • 1.Qf5+?
      • 1...Kh6
        • 2.g8S#
      • 1...Kh4!
    • 1.Qh1?
      • 1...Kxg6
        • 2.g8Q#
      • 1...Kg4!
    • 1.Qh2?
      • 1...Kxg6
        • 2.g8Q#
      • 1...Kg4!
    • 1.Qh4+?
      • 1...Kxg6
        • 2.g8Q#
      • 1...Kxh4!
  • Keys
    • 1.g8S!
      • 1...Kxg6
        • 2.Qf5#

This anticipates 275094(1980)

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT,XP(C)::P=Q
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Vars
        • K(a);P-FLIGHT,XP(C)::P=Q
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(B);P-FLIGHT
      • Vars
        • K(a);P-FLIGHT,XP(C)::P=Q
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);S_FLIGHT::P=S
      • Refutation
        • K(a);P-FLIGHT,XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);S_FLIGHT::P=S
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);P-FLIGHT,XP(C)::P=Q
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);P-FLIGHT,XP(C)::P=Q
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P-FLIGHT,XP(C)::P=Q
      • Refutation
        • K(a);S_FLIGHT,XQ(A)
  • Actual
    • P(D);
    • Vars
      • K(a);P-FLIGHT,XP(C)::QAB1(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).