MESON Chess Problem Database

Problem Display
PID: 272118 (1k1K4/1bN5/P7/8/1N6/8/8/2Q5 w - - 0 1)

Zimmer, Eligiusz

Pat a Mat, 1999

1k1K4/1bN5/P7/8/1N6/8/8/2Q5

#2

5 + 2

15601 Albrecht-Leiss-Degener Collection 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Bc6
      • 2.Sxc6#
    • 1...Bc8
      • 2.Sc6#
  • Tries
    • 1.Qb2?
      • threat
        • 2.Sc6#
      • 1...Bc6
        • 2.Sxc6#
      • 1...Ka7!
    • 1.Qb1?
      • threat
        • 2.Sc6#
      • 1...Bc6
        • 2.Sxc6#
      • 1...Ka7!
  • Keys
    • 1.Qc6!
      • threat
        • 2.Qxb7#
      • 1...Ka7
        • 2.Qxb7#
      • 1...Bxa6
        • 2.Qa8#
      • 1...Bxc6
        • 2.Sxc6#
      • 1...Ba8
        • 2.Qxa8#
      • 1...Bc8
        • 2.Qa8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(a);N_GUARD::S(B),XB(a)
    • B(a);N_GUARD::S(B)
  • Tries
    • Try
      • Q(A);
      • Threat
        • S(B)
      • Vars
        • B(a);::QAR(A)+S(B),DCHECK,XB(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • S(B)
      • Vars
        • B(a);::QAR(A)+S(B),DCHECK,XB(a)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(A);
    • Threat
      • QAR1(A),XB(a)
    • Vars
      • K(b);S_FLIGHT::QAR1(A),XB(a)
      • B(a);OGATE,XP(C)::QAR1(A)
      • B(a);XQ(A)::S(B),XB(a)
      • B(a);OGATE::QAR1(A),XB(a)
      • B(a);OGATE::QAR1(A)
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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).