MESON Chess Problem Database

Problem Display
PID: 133235 (3K4/8/n2k3P/3P3R/n2B4/4P1p1/3Q4/6b1 w - - 0 1)

Zipf, Volker

Leipziger Volkszeitung, 1998

3K4/8/n2k3P/3P3R/n2B4/4P1p1/3Q4/6b1

#2

7 + 5

14503 Problemschach-Jahrbuch (1999) 2000

SOLUTION

  • SOUND
  • Sets
    • 1...S4c5
      • 2.Be5#
    • 1...S6c5
      • 2.Be5#
  • Tries
    • 1.Qb4+?
      • 1...S4c5
        • 2.Qb6#
      • 1...S6c5
        • 2.Qb8#
      • 1...Sxb4!
    • 1.Qd3?
      • threat
        • 2.Qg6#
      • 1...S4c5
        • 2.Be5#
      • 1...S6c5
        • 2.Be5#
      • 1...Sc7!
  • Keys
    • 1.Qa5!
      • threat
        • 2.Be5#
      • 1...S4c5
        • 2.Qb6#
      • 1...S6c5
        • 2.Qc7#

There are these versions: 199264

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(c);SBLOCK::B(C)
    • S(d);SBLOCK::B(C)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • S(c);N_GUARD,P_SPINS(c)::QAR2(A)
        • S(d);N_GUARD,P_SPINS(d)::QAB(A)
      • Refutation
        • S(d);XQ(A)
    • Try
      • Q(A);
      • Threat
        • QAR(A)
      • Vars
        • S(c);SBLOCK::B(C)
        • S(d);SBLOCK::B(C)
      • Refutation
        • S(d);
  • Actual
    • Q(A);
    • Threat
      • B(C)
    • Vars
      • S(c);N_GUARD::QAR2(A)
      • S(d);N_GUARD::QAB1(A)
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).