MESON Chess Problem Database

Problem Display
PID: 199905 (8/8/8/5p1K/4Nk2/8/4BB2/7Q w - - 0 1)

Shmatov, Vladimir Afanasievich

Zadachi i Etyudi, 2017

8/8/8/5p1K/4Nk2/8/4BB2/7Q

#2

5 + 2

SOLUTION

  • SOUND
  • Tries
    • 1.Kg6?
      • 1...fxe4
        • 2.Qh2#
      • 1...Ke5!
    • 1.Bd3?
      • 1...fxe4
        • 2.Qxe4#
      • 1...Ke5!
    • 1.Qg2?
      • 1...fxe4
        • 2.Qg5#
      • 1...Ke5!
  • Keys
    • 1.Qa1!
      • 1...Kxe4
        • 2.Qd4#
      • 1...fxe4
        • 2.Qf6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(E);S_FLIGHT
      • Vars
        • P(b);SBLOCK,XS(D)::QAB(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(B);
      • Vars
        • P(b);OGATE,XS(D)::QAR1(A),XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • P(b);SBLOCK,XS(D)::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(a);OGATEB,P-FLIGHT,XS(D)::QAR1(A)
      • P(b);OGATEB,SBLOCK,XS(D)::QAR2(A)
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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).