MESON Chess Problem Database

Problem Display
PID: 224118 (2BR4/4pR2/K1Q1prrn/3N4/2N1kP2/2Pppp2/5p2/8 w - - 0 1)

Laib, Kurt Friedrich

Kieler Schachgesellschaft, 1971

2BR4/4pR2/K1Q1prrn/3N4/2N1kP2/2Pppp2/5p2/8

#2

9 + 10

16882 KSG-Problemschach 1969-1987 (Muck/Laue) 1993

SOLUTION

  • SOUND
  • Sets
    • 1...Kf5
      • 2.Qxe6#
    • 1...Rxf4
      • 2.Sdxe3#
      • 2.Sb4#
      • 2.Sxf4#
      • 2.Sdb6#
      • 2.Sc7#
      • 2.Sxe7#
      • 2.Rxf4#
  • Tries
    • 1.Sd2+?
      • 1...Kf5
        • 2.Bxe6#
        • 2.Qxe6#
      • 1...exd2!
    • 1.Sxf6+?
      • 1...Kf5
        • 2.Qe4#
      • 1...Kxf4!
  • Keys
    • 1.Qa4!
      • threat
        • 2.Scxe3#
      • 1...exd5+
        • 2.Sd6#
      • 1...e5+
        • 2.Scb6#
      • 1...Kf5
        • 2.Scxe3#
      • 1...Rxf4
        • 2.Rxf4#
      • 1...d2
        • 2.Qc2#
      • 1...Sf5
        • 2.Sd2#
      • 1...e2
        • 2.Sce3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • K(e);P_SPINP(f),P_SPINR(g),S_FLIGHT::QAB1(F),XP(f)
  • Tries
    • Try
      • S(B);CHECK
      • Refutation
        • P(c);XS(B)
    • Try
      • S(D);CHECK,XR(g)
      • Vars
        • K(e);P_SPINP(f),S_FLIGHT::QAB1(F)
      • Refutation
        • K(e);P-FLIGHT,XP(C)
  • Actual
    • Q(F);
    • Threat
      • QAR(F)+S(B),XP(c)
    • Vars
      • P(f);CHECK,SBLOCK,XS(D)::QAR(F)+S(B),DCHECK
      • P(f);CHECK::QAR(F)+S(B)
      • K(e);P_SPINP(f),P_SPINR(g),S_FLIGHT::S(B),XP(c)
      • R(g);OGATE,XP(C)::R1(G),XR(g)
      • P(b);OGATEB::QAB(F)
      • S(i);SBLOCK::QAR(F)+S(B),DCHECK
      • P(c);::QAR(F)+S(B)
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).