Problem Display
PID: 203835 (8/7R/3P1k2/4N3/4KP2/8/8/8 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1926

8/7R/3P1k2/4N3/4KP2/8/8/8

#2

5 + 1


15148 Sadier Collection 2020
5454 Near Snap 2022

SOLUTION


  • SOUND
  • Sets
    • 1...Ke6
      • 2.Rh6#
  • Tries
    • 1.Rh1?
      • 1...Ke6
        • 2.Rh6#
      • 1...Kg7!
    • 1.Rh2?
      • 1...Ke6
        • 2.Rh6#
      • 1...Kg7!
    • 1.Rh3?
      • 1...Ke6
        • 2.Rh6#
      • 1...Kg7!
    • 1.Rh4?
      • 1...Ke6
        • 2.Rh6#
      • 1...Kg7!
    • 1.Rh5?
      • 1...Ke6
        • 2.Rh6#
      • 1...Kg7!
    • 1.Rg7?
      • threat
        • 2.Rg6#
      • 1...Ke6
        • 2.Rg6#
      • 1...Kxg7!
    • 1.Rh8?
      • 1...Ke6
        • 2.Rh6#
      • 1...Kg7!
  • Keys
    • 1.Kd5!
      • 1...Kf5
        • 2.Rf7#

Anticipated by 203781(1926)

FEATURES


  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(a);P-FLIGHT::R(E)
  • Tries
    • Try
      • R(E);
      • Vars
        • K(a);P-FLIGHT::R(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(E);
      • Vars
        • K(a);P-FLIGHT::R(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(E);
      • Vars
        • K(a);P-FLIGHT::R(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(E);
      • Vars
        • K(a);P-FLIGHT::R(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(E);
      • Vars
        • K(a);P-FLIGHT::R(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(E);
      • Threat
        • R1(E)
      • Vars
        • K(a);P-FLIGHT::R(E)
      • Refutation
        • K(a);S_FLIGHT,XR(E)
    • Try
      • R(E);
      • Vars
        • K(a);P-FLIGHT::R(E)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • K(A);S_FLIGHT
    • Vars
      • K(a);P-FLIGHT::R(E)


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).