MESON Chess Problem Database

Problem Display
PID: 24981 (2bQ2Kn/8/2rpp3/3BkpN1/4pN2/2P1R1P1/4q3/8 w - - 0 1)

Muller, Dieter

Muller-50 JT Announcement, 1996

2bQ2Kn/8/2rpp3/3BkpN1/4pN2/2P1R1P1/4q3/8

#2

8 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qd3
      • 2.Sf3#
    • 1...Qf3
      • 2.Sxf3#
    • 1...Qc4
      • 2.Sf3#
    • 1...Qb5
      • 2.Sf3#
    • 1...Qa6
      • 2.Sf3#
    • 1...Qe1
      • 2.Sf3#
    • 1...Qa2
      • 2.Sf3#
    • 1...Qb2
      • 2.Sf3#
    • 1...Qc2
      • 2.Sf3#
    • 1...Qd2
      • 2.Sf3#
    • 1...Qh2
      • 2.Sf3#
    • 1...Sg6
      • 2.Sf7#
    • 1...Sf7
      • 2.Sxf7#
  • Tries
    • 1.Qe7?
      • threat
        • 2.Qg7#
      • 1...Sf7
        • 2.Sxf7#
      • 1...Rc7!
  • Keys
    • 1.Sxe4!
      • threat
        • 2.Qf6#
      • 1...Qg4+
        • 2.Sg5#
      • 1...fxe4
        • 2.Qg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 13
  • Sets
    • Q(a);N_GUARD::S(F)
    • Q(a);N_GUARD::S(F),XQ(a)
    • S(i);N_GUARD::S(F)
    • S(i);N_GUARD::S(F),XS(i)
  • Tries
    • Try
      • Q(G);
      • Threat
        • QAB(G)
      • Vars
        • S(i);N_GUARD::S(F),XS(i)
      • Refutation
        • R(e);
  • Actual
    • S(F);XP(b)
    • Threat
      • QAB1(G)
    • Vars
      • Q(a);CHECK,N_GUARD::R(B)+S(F)
      • P(d);OGATEB,P_SPINP(d),XS(F)::QAR2(G)
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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).