MESON Chess Problem Database

Problem Display
PID: 202512 (1K6/3p4/1kpp4/8/2P5/1N6/8/1Q6 w - - 0 1)

Hazuga, Imre

Nepszava, 1923

1K6/3p4/1kpp4/8/2P5/1N6/8/1Q6

#2

4 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Qe1?
      • threat
        • 2.Qa5#
      • 1...Ka6
        • 2.Qa5#
      • 1...c5!
    • 1.Qf1?
      • 1...Ka6
        • 2.c5#
      • 1...d5
        • 2.c5#
      • 1...c5!
    • 1.Qg1+?
      • 1...Ka6
        • 2.Qa7#
      • 1...c5!
  • Keys
    • 1.Qd3!
      • 1...Ka6
        • 2.c5#
      • 1...c5
        • 2.Qxd6#
      • 1...d5
        • 2.c5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • K(a);P-FLIGHT::QAR1(A)
      • Refutation
        • P(b);
    • Try
      • Q(A);
      • Vars
        • K(a);P-FLIGHT::QAB(A)+P(C)
        • P(c);N_GUARD::P(C)
      • Refutation
        • P(b);
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT::QAR1(A)
      • Refutation
        • P(b);P_SPINP(b)
  • Actual
    • Q(A);
    • Vars
      • K(a);P-FLIGHT::QAB(A)+P(C)
      • P(b);OGATEB::QAR2(A),XP(c)
      • P(c);N_GUARD::P(C)
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).