MESON Chess Problem Database

Problem Display
PID: 241774 (8/8/8/2p5/2K5/3Pk2N/6Q1/7n w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1928

8/8/8/2p5/2K5/3Pk2N/6Q1/7n

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sf2
      • 2.Qxf2#
    • 1...Sg3
      • 2.Qf2#
  • Tries
    • 1.Qf1?
      • 1...Sf2
        • 2.Qxf2#
      • 1...Sg3
        • 2.Qf2#
      • 1...Kd2!
    • 1.Qa2?
      • 1...Sf2
        • 2.Qxf2#
      • 1...Sg3
        • 2.Qf2#
      • 1...Kf3!
    • 1.Qb2?
      • 1...Sf2
        • 2.Qxf2#
      • 1...Sg3
        • 2.Qf2#
      • 1...Kf3!
    • 1.Qc2?
      • 1...Sf2
        • 2.Qxf2#
      • 1...Sg3
        • 2.Qf2#
      • 1...Kf3!
    • 1.Qh2?
      • 1...Sf2
        • 2.Qxf2#
      • 1...Sg3
        • 2.Qf2#
      • 1...Kf3!
  • Keys
    • 1.Kc3!
      • threat
        • 2.Qe4#
      • 1...Sf2
        • 2.Qxf2#
      • 1...Sg3
        • 2.Qf2#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::QAB1(A),XS(a)
    • S(a);N_GUARD::QAB1(A)
  • Tries
    • Try
      • Q(A);
      • Vars
        • S(a);N_GUARD::QAB1(A),XS(a)
        • S(a);N_GUARD::QAB1(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • S(a);N_GUARD::QAB1(A),XS(a)
        • S(a);N_GUARD::QAB1(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • S(a);N_GUARD::QAB1(A),XS(a)
        • S(a);N_GUARD::QAB1(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • S(a);N_GUARD::QAB1(A),XS(a)
        • S(a);N_GUARD::QAB1(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • S(a);N_GUARD::QAB1(A),XS(a)
        • S(a);N_GUARD::QAB1(A)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • K(D);P-FLIGHT
    • Threat
      • QAR1(A)
    • Vars
      • S(a);N_GUARD::QAB1(A),XS(a)
      • S(a);N_GUARD::QAB1(A)
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).