MESON Chess Problem Database

Problem Display
PID: 76922 (K1Nn4/2k5/5N2/3P4/8/6R1/8/7Q w - - 0 1)

Svyatov, Gennadi

Vakhlakov, Yuri Nikolaevich

Shakhmatnaya kompozitsiya, 2000

K1Nn4/2k5/5N2/3P4/8/6R1/8/7Q

#2

6 + 2

SOLUTION

  • SOUND
  • Tries
    • 1.Qh3?
      • threat
        • 2.Se8#
        • 2.Qd7#
      • 1...Sc6
        • 2.Qd7#
      • 1...Sb7
        • 2.Qd7#
      • 1...Sf7
        • 2.Qd7#
      • 1...Se6!
    • 1.Qh7+?
      • 1...Kxc8
        • 2.Qd7#
      • 1...Sf7!
    • 1.Qh8?
      • 1...Kxc8
        • 2.Rc3#
      • 1...Sc6
        • 2.d6#
      • 1...Sb7
        • 2.Rg7#
      • 1...Sf7
        • 2.Rc3#
      • 1...Se6!
  • Keys
    • 1.Rg8!
      • 1...Kxc8
        • 2.Qc1#
      • 1...Sc6
        • 2.d6#
      • 1...Se6
        • 2.d6#
      • 1...Sb7
        • 2.Qh7#
      • 1...Sf7
        • 2.Qc1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • S(b);::QAR1(A)
      • Refutation
        • S(b);
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P-FLIGHT,XS(F)::QAB1(A)
      • Refutation
        • S(b);P_SPINS(b)
    • Try
      • Q(A);
      • Vars
        • K(a);P-FLIGHT,P_SPINS(b),XS(F)::R(B)
        • S(b);SBLOCK::P(C)
        • S(b);N_GUARD::R(B)
      • Refutation
        • S(b);
  • Actual
    • R(B);
    • Vars
      • K(a);P-FLIGHT,P_SPINS(b),XS(F)::QAB(A)
      • S(b);::P(C)
      • S(b);N_GUARD::QAR(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).