MESON Chess Problem Database

Problem Display
PID: 119383 (1K6/1p5p/7k/4B1pp/6pN/4Q3/5P2/7q w - - 0 1)

Didenko, Vladimir Vasilovich

Panorama, 1997

1K6/1p5p/7k/4B1pp/6pN/4Q3/5P2/7q

#2

5 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qa1
      • 2.Qb6#
    • 1...Qe1
      • 2.Qb6#
    • 1...Qf1
      • 2.Qb6#
    • 1...Qg1
      • 2.Qb6#
    • 1...Qh2
      • 2.Qb6#
    • 1...Qh3
      • 2.Qb6#
    • 1...Qxh4
      • 2.Qb6#
  • Tries
    • 1.Qd4?
      • threat
        • 2.Bg7#
        • 2.Qd6#
      • 1...Qxh4
        • 2.Qb6#
        • 2.Qd6#
      • 1...Qf3
        • 2.Bg7#
      • 1...Qe4
        • 2.Bg7#
      • 1...Qd5
        • 2.Bg7#
      • 1...Qc6
        • 2.Bg7#
      • 1...Qb1
        • 2.Bg7#
      • 1...Qd1
        • 2.Bg7#
      • 1...Qh2
        • 2.Qb6#
        • 2.Qd6#
      • 1...gxh4!
  • Keys
    • 1.f4!
      • threat
        • 2.fxg5#
      • 1...Qxh4
        • 2.Qb6#
      • 1...gxf4
        • 2.Qxf4#
      • 1...gxh4
        • 2.f5#
      • 1...gxf4 ep
        • 2.Qb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • Q(a);N_GUARD::QAR(B)
    • Q(a);N_GUARD,P_PINB(D)::QAR(B)
    • Q(a);N_GUARD,XS(C)::QAR(B)
  • Tries
    • Try
      • Q(B);N_PINP(c)
      • Threat
        • DUALS(2)
      • Vars
        • Q(a);::B(D)
      • Refutation
        • P(c);XS(C)
  • Actual
    • P(A);N_PINP(c)
    • Threat
      • P(A),XP(c)
    • Vars
      • Q(a);N_GUARD,XS(C)::QAR(B)
      • P(c);OGATE,P_SPINP(c),XP(A)::QAB(B),XP(c)
      • P(c);XS(C)::QAB(B)+P(A)
      • P(b);EP,P_SPINP(c),S_CUTQ(a),XP(A)::QAR(B)
HTML5 logo

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).