MESON Chess Problem Database

Problem Display
PID: 172454 (8/nkPP4/4K3/8/8/2Q5/8/8 w - - 0 1)

Andreev, Aleksandr Grigorevich

Kuban segodniya, 1997

8/nkPP4/4K3/8/8/2Q5/8/8

#2

4 + 2

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.c8Q+?
      • 1...Kb6
        • 2.Q3c5#
      • 1...Sxc8!
  • Keys
    • 1.Qa5!
      • 1...Kc6
        • 2.d8S#
      • 1...Ka8
        • 2.c8Q#
      • 1...Sb5
        • 2.c8Q#
      • 1...Sc6
        • 2.c8Q#
      • 1...Sc8
        • 2.d8S#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • P(C);CHECK
      • Vars
        • K(b);P-FLIGHT::QAB1(A)
      • Refutation
        • S(a);XQ(C)
  • Actual
    • Q(A);
    • Vars
      • K(b);S_FLIGHT::P=S
      • K(b);P_SPINS(a),S_FLIGHT::P=Q
      • S(a);N_GUARD::P=Q
      • S(a);SBLOCK::P=S
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).