MESON Chess Problem Database

Problem Display
PID: 18594 (8/4p3/5R2/2pkp3/6Q1/8/3K4/8 w - - 0 1)

Hjelle, David

BCF, 1957

8/4p3/5R2/2pkp3/6Q1/8/3K4/8

#2

3 + 4

4884 154 norske miniatyrproblemer 1974
15593 170 Skakopgaver (Jorgensen) 1975
3295 Einfuhrung in die Welt des Schachproblem 1984
2838 Fun with Chess Miniatures 1996
81 Chess 2010
145 StrateGems 2012

SOLUTION

  • SOUND
  • Tries
    • 1.Re6?
      • 1...e4
        • 2.Qxe4#
      • 1...c4!
    • 1.Qe6+?
      • 1...Ke4
        • 2.Qc4#
      • 1...Kd4!
    • 1.Qd7+?
      • 1...Ke4
        • 2.Qd3#
      • 1...Kc4!
  • Keys
    • 1.Kd3!
      • threat
        • 2.Qe6#
        • 2.Qd7#
        • 2.Qc4#
        • 2.Qe4#
      • 1...c4+
        • 2.Qxc4#
      • 1...e4+
        • 2.Qxe4#
      • 1...exf6
        • 2.Qd7#
      • 1...e6
        • 2.Qxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(C);
      • Vars
        • P(c);::QAB1(B),XP(c)
      • Refutation
        • P(a);
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);OGATE,P_SPINP(c),S_FLIGHT::QAR2(B)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAB1(B)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • K(A);P-FLIGHT
    • Threat
      • DUALS(4)
    • Vars
      • P(a);CHECK::QAB1(B),XP(a)
      • P(c);CHECK::QAB1(B),XP(c)
      • P(d);XR(C)::QAR2(B)
      • P(d);::QAB1(B),XP(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).