MESON Chess Problem Database

Problem Display
PID: 162818 (4K2R/6kp/6N1/8/3NQ3/8/8/8 w - - 0 1)

Kozhakin, Vladimir Vladimirovich

Sachova skladba, 2012

4K2R/6kp/6N1/8/3NQ3/8/8/8

#2

5 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...hxg6
      • 2.Qe5#
  • Tries
    • 1.Ke7?
      • 1...hxg6
        • 2.Qe5#
      • 1...h5
        • 2.Se6#
      • 1...h6
        • 2.Se6#
      • 1...Kh6!
    • 1.Se6+?
      • 1...Kf6
        • 2.Rf8#
      • 1...Kh6!
    • 1.Sf4?
      • 1...Kf6
        • 2.Qe7#
      • 1...Kh6
        • 2.Qg6#
      • 1...h5
        • 2.Qe5#
      • 1...h6
        • 2.Qe5#
      • 1...Kxh8!
    • 1.Sh4?
      • 1...Kf6
        • 2.Qe7#
      • 1...Kh6
        • 2.Qg6#
      • 1...h5
        • 2.Qe5#
      • 1...h6
        • 2.Qe5#
      • 1...Kxh8!
    • 1.Se7?
      • 1...Kh6
        • 2.Qg6#
      • 1...Kxh8
        • 2.Qe5#
      • 1...h5
        • 2.Qe5#
      • 1...h6
        • 2.Qe5#
      • 1...Kf6!
    • 1.Rxh7+?
      • 1...Kf6
        • 2.Qf5#
      • 1...Kg8
        • 2.Se7#
      • 1...Kxh7!
    • 1.Rg8+?
      • 1...Kf6
        • 2.Qf5#
        • 2.Qf4#
        • 2.Qh4#
        • 2.Qe5#
        • 2.Qe7#
      • 1...Kh6
        • 2.Qh4#
      • 1...Kxg8!
    • 1.Qf5?
      • 1...hxg6
        • 2.Qe5#
        • 2.Qf8#
      • 1...h5
        • 2.Se6#
        • 2.Qf7#
      • 1...h6
        • 2.Se6#
        • 2.Qf7#
      • 1...Kh6!
    • 1.Qf4?
      • 1...hxg6
        • 2.Qe5#
        • 2.Qf8#
      • 1...h5
        • 2.Qf7#
      • 1...h6
        • 2.Qf7#
      • 1...Kxg6!
    • 1.Qe6?
      • threat
        • 2.Sf5#
      • 1...hxg6
        • 2.Qe5#
      • 1...Kh6!
  • Keys
    • 1.Sf8!
      • 1...Kf6
        • 2.Qe7#
      • 1...Kh6
        • 2.Qg6#
      • 1...Kxh8
        • 2.Qxh7#
      • 1...h5
        • 2.Qe5#
      • 1...h6
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • P(b);SBLOCK,XS(C)::QAB(B)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Vars
        • P(b);SBLOCK,XS(C)::QAB(B)
        • P(b);::S(A)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
    • Try
      • S(A);CHECK
      • Vars
        • K(a);S_FLIGHT::R(E)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
    • Try
      • S(C);
      • Vars
        • K(a);S_FLIGHT::QAB1(B)
        • K(a);P_SPINP(b),S_FLIGHT::QAR1(B)
        • P(b);::QAB(B)
      • Refutation
        • K(a);S_FLIGHT,XR(E)
    • Try
      • S(C);
      • Vars
        • K(a);S_FLIGHT::QAB1(B)
        • K(a);P_SPINP(b),S_FLIGHT::QAR1(B)
        • P(b);::QAB(B)
      • Refutation
        • K(a);S_FLIGHT,XR(E)
    • Try
      • S(C);
      • Vars
        • K(a);P_SPINP(b),S_FLIGHT::QAR1(B)
        • K(a);S_FLIGHT,XR(E)::QAB(B)
        • P(b);::QAB(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(E);CHECK,XP(b)
      • Vars
        • K(a);S_FLIGHT::QAR1(B)
        • K(a);P-FLIGHT::S(C)
      • Refutation
        • K(a);P-FLIGHT,XR(E)
    • Try
      • R(E);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR2(B)
      • Refutation
        • K(a);P-FLIGHT,XR(E)
    • Try
      • Q(B);
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • P(b);::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT,XS(C)
    • Try
      • Q(B);
      • Threat
        • S(A)
      • Vars
        • P(b);SBLOCK,XS(C)::QAB(B)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
  • Actual
    • S(C);
    • Vars
      • K(a);S_FLIGHT::QAB1(B)
      • K(a);P_SPINP(b),S_FLIGHT::QAR1(B)
      • K(a);S_FLIGHT,XR(E)::QAR1(B),XP(b)
      • P(b);::QAB(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).