MESON Chess Problem Database

Problem Display
PID: 231558 (8/KN2P3/2p5/1k1p4/3Q4/8/8/8 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1927

8/KN2P3/2p5/1k1p4/3Q4/8/8/8

#2

4 + 3

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...c5
      • 2.e8Q#
      • 2.e8B#
  • Tries
    • 1.Qc3?
      • threat
        • 2.Qb3#
      • 1...c5
        • 2.e8Q#
        • 2.e8B#
      • 1...Ka4!
    • 1.Qf4?
      • 1...c5
        • 2.e8Q#
        • 2.e8B#
      • 1...d4!
    • 1.Qg4?
      • 1...c5
        • 2.e8Q#
        • 2.e8B#
      • 1...d4!
    • 1.Qh4?
      • 1...c5
        • 2.e8Q#
        • 2.e8B#
      • 1...d4!
  • Keys
    • 1.Sc5!
      • 1...Ka5
        • 2.Qa4#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(c);::P=Q
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR2(A)
      • Vars
        • P(c);::P=Q
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • P(c);::P=Q
      • Refutation
        • P(b);
    • Try
      • Q(A);
      • Vars
        • P(c);::P=Q
      • Refutation
        • P(b);
    • Try
      • Q(A);
      • Vars
        • P(c);::P=Q
      • Refutation
        • P(b);
  • Actual
    • S(C);
    • Vars
      • K(a);P-FLIGHT::QAR1(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).