MESON Chess Problem Database

Problem Display
PID: 207679 (3K1k1B/5p1r/8/8/8/8/8/Q7 w - - 0 1)

Caplin, Aleksandr Borisovich

Sachova skladba, 2015

3K1k1B/5p1r/8/8/8/8/8/Q7

#2

3 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Rh1
      • 2.Qg7#
    • 1...Rh2
      • 2.Qg7#
    • 1...Rh3
      • 2.Qg7#
    • 1...Rh4
      • 2.Qg7#
    • 1...Rh5
      • 2.Qg7#
    • 1...Rh6
      • 2.Qg7#
    • 1...Rg7
      • 2.Qxg7#
    • 1...Rxh8
      • 2.Qxh8#
  • Tries
    • 1.Qf6?
      • 1...Rxh8
        • 2.Qxh8#
      • 1...Rh1
        • 2.Qg7#
      • 1...Rh2
        • 2.Qg7#
      • 1...Rh3
        • 2.Qg7#
      • 1...Rh4
        • 2.Qg7#
      • 1...Rh5
        • 2.Qg7#
      • 1...Rh6
        • 2.Qg7#
      • 1...Rg7
        • 2.Qxg7#
      • 1...Kg8!
    • 1.Qe1?
      • threat
        • 2.Qe8#
      • 1...Kg8
        • 2.Qe8#
      • 1...Rxh8!
    • 1.Qa4?
      • threat
        • 2.Qe8#
      • 1...Kg8
        • 2.Qe8#
      • 1...Rxh8!
  • Keys
    • 1.Qe5!
      • threat
        • 2.Qe8#
      • 1...Kg8
        • 2.Qe8#
      • 1...Rxh8
        • 2.Qxh8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 7
  • Sets
    • R(b);N_GUARD::QAB1(A)
    • R(b);N_GUARD::QAB1(A),XR(b)
    • R(b);OGATE,XB(C)::QAR2(A),XR(b)
  • Tries
    • Try
      • Q(A);P_PINP(a)
      • Vars
        • R(b);OGATE,XB(C)::QAR2(A),XR(b)
        • R(b);N_GUARD::QAB1(A)
        • R(b);N_GUARD::QAB1(A),XR(b)
      • Refutation
        • K(c);N_SPINP(a),P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • K(c);P-FLIGHT::QAR2(A)
      • Refutation
        • R(b);XB(C)
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • K(c);P-FLIGHT::QAR2(A)
      • Refutation
        • R(b);XB(C)
  • Actual
    • Q(A);
    • Threat
      • QAR1(A)
    • Vars
      • K(c);P-FLIGHT::QAR2(A)
      • R(b);OGATE,XB(C)::QAR2(A),XR(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).