MESON Chess Problem Database

Problem Display
PID: 171339 (8/8/5p2/4Nk2/5N2/5K2/8/6Q1 w - - 0 1)

Antipov, Viacheslav Pavlovich

Shakh-M (Borovich), 1995

8/8/5p2/4Nk2/5N2/5K2/8/6Q1

#2

4 + 2

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe5
      • 2.Qc5#
    • 1...fxe5
      • 2.Qg6#
  • Tries
    • 1.Ke3?
      • 1...fxe5
        • 2.Qg6#
      • 1...Kxe5!
    • 1.Qb6?
      • 1...Kxe5
        • 2.Qc5#
      • 1...fxe5
        • 2.Qg6#
      • 1...Kg5!
    • 1.Qg2?
      • 1...fxe5
        • 2.Qg6#
      • 1...Kxe5!
    • 1.Qg3?
      • 1...fxe5
        • 2.Qg6#
      • 1...Kxe5!
    • 1.Qg7?
      • 1...fxe5
        • 2.Qg6#
      • 1...Kxe5!
  • Keys
    • 1.Qg8!
      • 1...Kxe5
        • 2.Qd5#
      • 1...fxe5
        • 2.Qg6#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(a);OGATEB,P-FLIGHT,XS(D)::QAR2(A)
    • P(b);SBLOCK,XS(D)::QAB1(A)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Vars
        • P(b);SBLOCK,XS(D)::QAB1(A)
      • Refutation
        • K(a);P-FLIGHT,XS(D)
    • Try
      • Q(A);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XS(D)::QAR2(A)
        • P(b);OGATE,SBLOCK,XS(D)::QAB1(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • P(b);SBLOCK,XS(D)::QAB1(A)
      • Refutation
        • K(a);P-FLIGHT,XS(D)
    • Try
      • Q(A);
      • Vars
        • P(b);SBLOCK,XS(D)::QAB1(A)
      • Refutation
        • K(a);P-FLIGHT,XS(D)
    • Try
      • Q(A);
      • Vars
        • P(b);SBLOCK,XS(D)::QAB1(A)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(b),XS(D)
  • Actual
    • Q(A);
    • Vars
      • K(a);OGATEB,P-FLIGHT,XS(D)::QAR1(A)
      • P(b);SBLOCK,XS(D)::QAB1(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).