MESON Chess Problem Database

Problem Display
PID: 241794 (2Q5/3PRp2/3N1k1K/8/8/8/8/8 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1929

2Q5/3PRp2/3N1k1K/8/8/8/8/8

#2

5 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe7
      • 2.d8Q#
  • Tries
    • 1.Kh7?
      • 1...Kxe7
        • 2.d8Q#
      • 1...Kg5!
    • 1.Sc4?
      • 1...Kxe7
        • 2.d8Q#
      • 1...Kf5!
    • 1.Se4+?
      • 1...Kxe7
        • 2.Qe8#
        • 2.d8Q#
      • 1...Kf5!
    • 1.Sb5?
      • 1...Kxe7
        • 2.d8Q#
      • 1...Kf5!
    • 1.Sb7?
      • 1...Kxe7
        • 2.d8Q#
      • 1...Kf5!
  • Keys
    • 1.Kh5!
      • 1...Kxe7
        • 2.d8Q#
      • 1...Kg7
        • 2.Rxf7#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT,XR(D)::P=Q
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT,XR(D)::P=Q
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(A);
      • Vars
        • K(a);S_FLIGHT,XR(D)::P=Q
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(A);CHECK
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(A);
      • Vars
        • K(a);S_FLIGHT,XR(D)::P=Q
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(A);
      • Vars
        • K(a);S_FLIGHT,XR(D)::P=Q
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • K(B);P-FLIGHT
    • Vars
      • K(a);S_FLIGHT,XR(D)::P=Q
      • K(a);P_SPINP(b),S_FLIGHT::R1(D),XP(b)
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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).