MESON Chess Problem Database

Problem Display
PID: 241913 (8/8/1p6/1N3Q2/8/4k3/2K2n2/6B1 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1933

8/8/1p6/1N3Q2/8/4k3/2K2n2/6B1

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ke2
      • 2.Qxf2#
  • Tries
    • 1.Sa3?
      • 1...Ke2
        • 2.Qxf2#
      • 1...Kd4
        • 2.Bxf2#
      • 1...b5!
    • 1.Qf4+?
      • 1...Ke2
        • 2.Qxf2#
      • 1...Kxf4!
    • 1.Qf6?
      • 1...Ke2
        • 2.Qxf2#
      • 1...Ke4!
    • 1.Qf7?
      • 1...Ke2
        • 2.Qxf2#
      • 1...Ke4!
    • 1.Qf8?
      • 1...Ke2
        • 2.Qxf2#
      • 1...Ke4!
  • Keys
    • 1.Sd6!
      • threat
        • 2.Qe4#
        • 2.Qxf2#
      • 1...Ke2
        • 2.Qxf2#
      • 1...Kd4
        • 2.Bxf2#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(b);N_SPINS(a),P-FLIGHT::QAR1(D),XS(a)
  • Tries
    • Try
      • S(C);
      • Vars
        • K(b);N_SPINS(a),P-FLIGHT::QAR1(D),XS(a)
        • K(b);S_FLIGHT::B(A),XS(a)
      • Refutation
        • P(c);
    • Try
      • Q(D);CHECK
      • Vars
        • K(b);N_SPINS(a),P-FLIGHT::QAR1(D),XS(a)
      • Refutation
        • K(b);N_SPINS(a),S_FLIGHT,XQ(D)
    • Try
      • Q(D);
      • Vars
        • K(b);N_SPINS(a),P-FLIGHT::QAR1(D),XS(a)
      • Refutation
        • K(b);N_SPINS(a),P-FLIGHT
    • Try
      • Q(D);
      • Vars
        • K(b);N_SPINS(a),P-FLIGHT::QAR1(D),XS(a)
      • Refutation
        • K(b);N_SPINS(a),P-FLIGHT
    • Try
      • Q(D);
      • Vars
        • K(b);N_SPINS(a),P-FLIGHT::QAR1(D),XS(a)
      • Refutation
        • K(b);N_SPINS(a),P-FLIGHT
  • Actual
    • S(C);
    • Threat
      • DUALS(2)
    • Vars
      • K(b);N_SPINS(a),P-FLIGHT::QAR1(D),XS(a)
      • K(b);S_FLIGHT::B(A),XS(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).