MESON Chess Problem Database

Problem Display
PID: 8006 (8/3Qn2K/kPn5/2Bp4/1P1N4/8/8/8 w - - 0 1)

Rice, John Michael

Chess Problems for Solving, 1995

8/3Qn2K/kPn5/2Bp4/1P1N4/8/8/8

#2

6 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Sxb4
      • 2.Qa7#
    • 1...Sa5
      • 2.Qa7#
      • 2.b5#
    • 1...Se5
      • 2.Qa7#
    • 1...Sa7
      • 2.Qxa7#
    • 1...Sb8
      • 2.Qa7#
    • 1...Sd8
      • 2.Qa7#
    • 1...Sf5
      • 2.Qc8#
    • 1...Sg6
      • 2.Qc8#
    • 1...Sc8
      • 2.Qxc8#
    • 1...Sg8
      • 2.Qc8#
  • Tries
    • 1.Qxc6?
      • threat
        • 2.Qa8#
      • 1...Sc8
        • 2.Qxc8#
      • 1...Sxc6!
    • 1.Qc7?
      • 1...Sxb4
        • 2.Qa7#
      • 1...Sa5
        • 2.Qa7#
        • 2.b5#
      • 1...Se5
        • 2.Qa7#
      • 1...Sa7
        • 2.Qxa7#
      • 1...Sb8
        • 2.Qa7#
      • 1...Sd8
        • 2.Qa7#
      • 1...Sf5
        • 2.Qc8#
      • 1...Sg6
        • 2.Qc8#
      • 1...Sc8
        • 2.Qxc8#
      • 1...Sg8
        • 2.Qc8#
      • 1...Sxd4!
  • Keys
    • 1.b7!
      • 1...Sxb4
        • 2.Qb5#
      • 1...Sxd4
        • 2.b8S#
      • 1...Sa5
        • 2.Qb5#
        • 2.b5#
        • 2.b8S#
      • 1...Se5
        • 2.Qb5#
        • 2.b8S#
      • 1...Sa7
        • 2.b8S#
      • 1...Sb8
        • 2.Qb5#
      • 1...Sd8
        • 2.Qb5#
        • 2.b8S#
      • 1...Sf5
        • 2.Qxc6#
      • 1...Sg6
        • 2.Qxc6#
      • 1...Sc8
        • 2.bxc8Q#
        • 2.bxc8B#
      • 1...Sg8
        • 2.Qxc6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 6
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • S(c);N_GUARD,XP(A)::QAR1(E)
    • S(c);N_GUARD::QAR1(E)
    • S(c);N_GUARD::QAR1(E),XS(c)
    • S(d);N_GUARD::QAB(E)
    • S(d);N_GUARD::QAB(E),XS(d)
  • Tries
    • Try
      • Q(E);XS(c)
      • Threat
        • QAR2(E)
      • Vars
        • S(d);N_GUARD::QAB(E),XS(d)
      • Refutation
        • S(d);XQ(E)
    • Try
      • Q(E);
      • Vars
        • S(c);N_GUARD,XP(A)::QAR1(E)
        • S(c);N_GUARD::QAR1(E)
        • S(c);N_GUARD::QAR1(E),XS(c)
        • S(d);N_GUARD::QAB(E)
        • S(d);N_GUARD::QAB(E),XS(d)
      • Refutation
        • S(c);XS(B)
  • Actual
    • P(D);
    • Vars
      • S(c);OGATE,XP(A)::QAB1(E)
      • S(c);N_GUARD,XS(B)::P=S
      • S(c);N_GUARD::P=S
      • S(c);OGATE::QAB1(E)
      • S(d);N_GUARD::QAR2(E),XS(c)
      • S(d);OGATE::PXS(d)=Q
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).