MESON Chess Problem Database

Problem Display
PID: 103680 (kB6/N4R2/3K4/8/8/1b6/1Q6/8 w - - 0 1)

Pankratiev, Aleksandr Nikolaevich

Kudesnik, 2006

kB6/N4R2/3K4/8/8/1b6/1Q6/8

#2

5 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxb8
      • 2.Qh8#
    • 1...Bd1
      • 2.Qb7#
    • 1...Ba2
      • 2.Qb7#
    • 1...Bc2
      • 2.Qb7#
    • 1...Ba4
      • 2.Qb7#
    • 1...Bc4
      • 2.Qb7#
    • 1...Be6
      • 2.Qb7#
  • Tries
    • 1.Kc7?
      • 1...Bxf7
        • 2.Qb7#
      • 1...Bd1
        • 2.Qb7#
      • 1...Ba2
        • 2.Qb7#
      • 1...Bc2
        • 2.Qb7#
      • 1...Ba4
        • 2.Qb7#
      • 1...Bc4
        • 2.Qb7#
      • 1...Be6
        • 2.Qb7#
      • 1...Bd5!
    • 1.Qg2+?
      • 1...Kxb8
        • 2.Qb7#
        • 2.Qg8#
      • 1...Bd5!
  • Keys
    • 1.Sb5!
      • 1...Kxb8
        • 2.Qh8#
      • 1...Bxf7
        • 2.Sc7#
      • 1...Bd5
        • 2.Sc7#
      • 1...Bd1
        • 2.Sc7#
      • 1...Ba2
        • 2.Sc7#
      • 1...Bc2
        • 2.Sc7#
      • 1...Ba4
        • 2.Sc7#
      • 1...Bc4
        • 2.Sc7#
      • 1...Be6
        • 2.Sc7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 6
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);OGATEB,P-FLIGHT,P_SPINB(a),XB(E)::QAR(A)
    • B(a);OGATE::QAB1(A)
  • Tries
    • Try
      • K(B);S_FLIGHT
      • Vars
        • B(a);OGATE,XR(D)::QAB1(A)
        • B(a);OGATE::QAB1(A)
      • Refutation
        • B(a);
    • Try
      • Q(A);CHECK
      • Refutation
        • B(a);P_SPINB(a)
  • Actual
    • S(C);
    • Vars
      • K(b);OGATEB,P-FLIGHT,XB(E)::QAR(A)
      • B(a);XR(D)::S(C)
      • B(a);::S(C)
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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).