MESON Chess Problem Database

Problem Display
PID: 242064 (4R3/1N6/4Pk2/8/4p1Q1/4K3/8/8 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1936

4R3/1N6/4Pk2/8/4p1Q1/4K3/8/8

#2

5 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Qg5#
  • Tries
    • 1.Re7?
      • 1...Ke5
        • 2.Qg5#
      • 1...Kxe7!
    • 1.Rf8+?
      • 1...Ke5
        • 2.Qf5#
        • 2.Qxe4#
      • 1...Ke7!
    • 1.Qg1?
      • 1...Ke5
        • 2.Qg5#
      • 1...Kf5!
    • 1.Qg2?
      • 1...Ke5
        • 2.Qg5#
      • 1...Kf5!
    • 1.Qg6+?
      • 1...Ke5
        • 2.Qg5#
      • 1...Kxg6!
    • 1.Qg7+?
      • 1...Kf5
        • 2.Sd6#
      • 1...Kxg7!
    • 1.Qg8?
      • 1...Ke5
        • 2.Qg5#
      • 1...Kf5!
  • Keys
    • 1.Kf4!
      • 1...e3
        • 2.Qg5#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(b);S_FLIGHT::QAR2(B)
  • Tries
    • Try
      • R(E);
      • Vars
        • K(b);S_FLIGHT::QAR2(B)
      • Refutation
        • K(b);S_FLIGHT,XR(E)
    • Try
      • R(E);CHECK
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(b);S_FLIGHT::QAR2(B)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(b);S_FLIGHT::QAR2(B)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR2(B)
      • Refutation
        • K(b);P-FLIGHT,XQ(B)
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);P-FLIGHT::S(D)
      • Refutation
        • K(b);S_FLIGHT,XQ(B)
    • Try
      • Q(B);
      • Vars
        • K(b);S_FLIGHT::QAR2(B)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • K(A);S_FLIGHT
    • Vars
      • P(a);::QAB1(B)
HTML5 logo

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).