MESON Chess Problem Database

Problem Display
PID: 261533 (8/8/1p2P1R1/1Knk2r1/1b1p1QN1/8/8/8 w - - 0 1)

Kupper, Josef

Neue Zurcher Zeitung, 1959

8/8/1p2P1R1/1Knk2r1/1b1p1QN1/8/8/8

#2

5 + 6

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Re5
      • 2.Qxe5#
    • 1...Rxg6
      • 2.Qe5#
    • 1...Sxe6
      • 2.Sf6#
    • 1...d3
      • 2.Se3#
  • Keys
    • 1.e7!
      • threat
        • 2.Rd6#
      • 1...Rxg6
        • 2.Qe5#
      • 1...Re5
        • 2.Qxe5#
      • 1...Sb3
        • 2.Qf3#
      • 1...Sd3
        • 2.Qf3#
      • 1...Sa4
        • 2.Qf3#
      • 1...Se4
        • 2.Qf7#
      • 1...Sa6
        • 2.Qf3#
      • 1...Se6
        • 2.Sf6#
      • 1...Sb7
        • 2.Qf3#
      • 1...Sd7
        • 2.Qf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 1
  • Sets
    • R(e);N_GUARD::QAR1(A),XR(e)
    • R(e);N_GUARD,XR(E)::QAR1(A)
    • S(c);SBLOCK,XP(D)::S(B)
    • P(b);N_GUARD::S(B)
  • Actual
    • P(D);
    • Threat
      • R1(E)
    • Vars
      • R(e);N_GUARD,XR(E)::QAR1(A)
      • R(e);N_GUARD::QAR1(A),XR(e)
      • S(c);N_GUARD::QAB(A)
      • S(c);N_GUARD,SBLOCK::QAB(A)
      • S(c);SBLOCK::S(B)
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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).