MESON Chess Problem Database

Problem Display
PID: 175078 (k6r/1p6/2p5/1N6/3p4/8/7B/K5Q1 w - - 0 1)

Stritecky Blazej

Besedy lidu, 1902

k6r/1p6/2p5/1N6/3p4/8/7B/K5Q1

#2

4 + 5

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rxh2
      • 2.Qg8#
    • 1...Rh3
      • 2.Qg8#
    • 1...Rh4
      • 2.Qg8#
    • 1...Rh5
      • 2.Qg8#
    • 1...Rh6
      • 2.Qg8#
    • 1...Rh7
      • 2.Qg8#
    • 1...Rg8
      • 2.Qxg8#
    • 1...d3
      • 2.Qa7#
  • Tries
    • 1.Qf2?
      • threat
        • 2.Qa2#
      • 1...Rxh2
        • 2.Qf8#
      • 1...Rh3
        • 2.Qf8#
      • 1...b6!
    • 1.Qe1?
      • threat
        • 2.Qa5#
      • 1...Rxh2
        • 2.Qe8#
      • 1...b6!
  • Keys
    • 1.Qg2!
      • threat
        • 2.Qa2#
      • 1...Rxh2
        • 2.Qg8#
      • 1...b6
        • 2.Qxc6#
      • 1...Rh3
        • 2.Qg8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 6
  • Sets
    • R(e);N_GUARD,XB(C)::QAR(B)
    • R(e);N_GUARD::QAR(B)
    • R(e);N_GUARD,SBLOCK::QAR(B)
    • R(e);N_GUARD::QAR(B),XR(e)
    • P(a);OGATE::QAR1(B)
  • Tries
    • Try
      • Q(B);
      • Threat
        • QAR(B)
      • Vars
        • R(e);N_GUARD,XB(C)::QAR(B)
        • R(e);N_GUARD::QAR(B)
      • Refutation
        • P(c);
    • Try
      • Q(B);
      • Threat
        • QAR(B)
      • Vars
        • R(e);N_GUARD,XB(C)::QAR(B)
      • Refutation
        • P(c);
  • Actual
    • Q(B);
    • Threat
      • QAR(B)
    • Vars
      • R(e);N_GUARD,XB(C)::QAR(B)
      • P(c);OGATEB,P_SPINP(b)::QAB(B),XP(b)
      • R(e);N_GUARD::QAR(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).