MESON Chess Problem Database

Problem Display
PID: 117078 (8/B7/8/1p6/1k6/4P3/K1PP4/7Q w - - 0 1)

Krizhanivsky, Vasil Viktorovich

64 Shakhmatnoe obozrenie, 1990

8/B7/8/1p6/1k6/4P3/K1PP4/7Q

#2

6 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Qe4#
  • Tries
    • 1.Bb6?
      • threat
        • 2.Qe4#
        • 2.Qh4#
      • 1...Kc4
        • 2.Qe4#
      • 1...Ka4!
    • 1.Qa1?
      • 1...Kc4
        • 2.Qd4#
      • 1...Ka5
        • 2.Kb3#
      • 1...Ka4!
    • 1.Qc1?
      • 1...Ka4
        • 2.Qa3#
      • 1...Ka5
        • 2.Qa3#
      • 1...Kc4!
  • Keys
    • 1.Qa8!
      • 1...Ka4
        • 2.Bc5#
      • 1...Kc4
        • 2.Qe4#
      • 1...Ka5
        • 2.Bc5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::QAR2(A)
  • Tries
    • Try
      • B(F);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);P-FLIGHT::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);P-FLIGHT::QAR1(A)
        • K(a);S_FLIGHT::QAR(A)+K(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);P-FLIGHT::QAR1(A)
        • K(a);S_FLIGHT::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(a);P-FLIGHT::QAR(A)+B(F)
      • K(a);P-FLIGHT::QAR2(A)
      • K(a);S_FLIGHT::QAR(A)+B(F)
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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).