MESON Chess Problem Database

Problem Display
PID: 69842 (3B4/2pK4/2Q1p3/4k3/1P2N1PP/2p3p1/3Pn3/2b1r1r1 w - - 0 1)

Burger, Robert Eugene

16th Place, 03. WCCT, 1984-1988

3B4/2pK4/2Q1p3/4k3/1P2N1PP/2p3p1/3Pn3/2b1r1r1

#2

8 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Sd4
      • 2.Bxc7#
    • 1...Sf4
      • 2.Bf6#
  • Tries
    • 1.Sc5?
      • threat
        • 2.Qe4#
      • 1...Kd4
        • 2.Qe4#
      • 1...Kf4
        • 2.Qe4#
      • 1...Sd4
        • 2.Sd3#
      • 1...Sf4!
    • 1.Sg5?
      • threat
        • 2.Qe4#
      • 1...Kd4
        • 2.Qe4#
      • 1...Kf4
        • 2.Qe4#
      • 1...Sf4
        • 2.Sf3#
      • 1...Sd4!
    • 1.Qxe6+?
      • 1...Kf4
        • 2.Qf5#
      • 1...Kd4!
  • Keys
    • 1.Sf6!
      • threat
        • 2.Qe4#
      • 1...Kd4
        • 2.Qe4#
      • 1...Kf4
        • 2.Qe4#
      • 1...Sf4
        • 2.Qxc3#
      • 1...Sd4
        • 2.Qxc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(d);SBLOCK::B(H),XP(i)
    • S(d);SBLOCK::B(H)
  • Tries
    • Try
      • S(C);
      • Threat
        • QAR1(F)
      • Vars
        • K(g);S_FLIGHT::QAR1(F)
        • S(d);SBLOCK::S(C)
      • Refutation
        • S(d);
    • Try
      • S(C);
      • Threat
        • QAR1(F)
      • Vars
        • K(g);S_FLIGHT::QAR1(F)
        • S(d);SBLOCK::S(C)
      • Refutation
        • S(d);
    • Try
      • Q(F);CHECK,XP(h)
      • Vars
        • K(g);S_FLIGHT::QAR1(F)
      • Refutation
        • K(g);S_FLIGHT
  • Actual
    • S(C);
    • Threat
      • QAR1(F)
    • Vars
      • K(g);S_FLIGHT::QAR1(F)
      • S(d);N_GUARD,SBLOCK::QAB(F),XP(e)
      • S(d);SBLOCK::QAB(F),XP(i)
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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).