MESON Chess Problem Database

Problem Display
PID: 203519 (2Q5/4Kb2/3N1N2/4kpp1/8/3p1p1r/8/8 w - - 0 1)

Harcz, Karoly

Uj Nemezdek, 1924

2Q5/4Kb2/3N1N2/4kpp1/8/3p1p1r/8/8

#2

4 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...f4
      • 2.Qc3#
  • Tries
    • 1.Sd7+?
      • 1...Kd4
        • 2.Qc5#
      • 1...Kd5
        • 2.Qc4#
        • 2.Qc5#
      • 1...Kf4!
  • Keys
    • 1.Qc7!
      • threat
        • 2.Sb5#
      • 1...Kd4
        • 2.Sxf5#
      • 1...Kf4
        • 2.Sc4#
      • 1...f4
        • 2.Qc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(e);SBLOCK::QAB(D)
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(d);S_FLIGHT::QAB1(D)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • Q(D);
    • Threat
      • QAB(D)+S(A)
    • Vars
      • K(d);S_FLIGHT::S(A),XP(e)
      • K(d);S_FLIGHT::QAB(D)+S(A)
      • P(e);SBLOCK::QAB(D)
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).