MESON Chess Problem Database

Problem Display
PID: 38494 (4k2r/R6p/8/8/6p1/8/6K1/6Q1 w k - 0 1)

Widlert, Kjell Einar

Tidskrift for Schack, 1968

4k2r/R6p/8/8/6p1/8/6K1/6Q1

#2

3 + 4

102 Probleemblad 1977
17145 Svenska Miniatyrer i urval (Froberg/Hultberg) 1978
2012 Miniature Chess Problems from Many Countries 1981

SOLUTION

  • SOUND
  • Tries
    • 1.Qh2?
      • threat
        • 2.Qb8#
      • 1...Kd8
        • 2.Qb8#
      • 1...Kf8
        • 2.Qb8#
      • 1...0-0
        • 2.Qxh7#
      • 1...g3!
    • 1.Qd4?
      • threat
        • 2.Qxh8#
      • 1...Kf8
        • 2.Qxh8#
        • 2.Qd8#
      • 1...0-0
        • 2.Qg7#
      • 1...Rf8
        • 2.Qd7#
      • 1...Rg8!
    • 1.Qb6?
      • threat
        • 2.Qb8#
      • 1...Kf8
        • 2.Qd8#
        • 2.Qb8#
      • 1...0-0!
  • Keys
    • 1.Qb1!
      • threat
        • 2.Qb8#
      • 1...Kd8
        • 2.Qb8#
      • 1...Kf8
        • 2.Qb8#
      • 1...0-0
        • 2.Qxh7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR(A)
      • Vars
        • K(c);P-FLIGHT::QAR2(A)
        • K(c);P-FLIGHT::QAR(A)
        • K(c);0-0,OGATEB::QAB1(A),XP(b)
      • Refutation
        • P(a);
    • Try
      • Q(A);
      • Threat
        • QAR(A),XR(d)
      • Vars
        • K(c);0-0,OGATEB::QAR1(A)
        • R(d);SBLOCK::QAB1(A)
      • Refutation
        • R(d);
    • Try
      • Q(A);
      • Threat
        • QAR(A)
      • Refutation
        • K(c);0-0
  • Actual
    • Q(A);
    • Threat
      • QAR(A)
    • Vars
      • K(c);P-FLIGHT::QAR2(A)
      • K(c);P-FLIGHT::QAR(A)
      • K(c);0-0,OGATEB::QAB1(A),XP(b)
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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).