MESON Chess Problem Database

Problem Display
PID: 185976 (8/4R3/3nQ3/b7/2Bpn3/3N1kP1/7K/5N2 w - - 0 1)

Stoyanov, Kiril N

Chess, 1958

8/4R3/3nQ3/b7/2Bpn3/3N1kP1/7K/5N2

#2

7 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Sd2
      • 2.Qe2#
    • 1...Sf2
      • 2.Qe2#
    • 1...Sc3
      • 2.Sd2#
    • 1...Sc5
      • 2.Qe2#
    • 1...Sg5
      • 2.Qe2#
    • 1...Sf6
      • 2.Qe2#
    • 1...Sxc4
      • 2.Qxe4#
    • 1...Sb5
      • 2.Qxe4#
    • 1...Sf5
      • 2.Qxe4#
    • 1...Sb7
      • 2.Qxe4#
    • 1...Sf7
      • 2.Qxe4#
    • 1...Sc8
      • 2.Qxe4#
    • 1...Se8
      • 2.Qxe4#
  • Keys
    • 1.Kg1!
      • threat
        • 2.Se5#
      • 1...Ke2
        • 2.Qg4#
      • 1...Sxg3
        • 2.Sh2#
      • 1...Sxc4
        • 2.Qxe4#
      • 1...Sd2
        • 2.Se1#
        • 2.Qe2#
      • 1...Sf2
        • 2.Qe2#
      • 1...Sc3
        • 2.Se1#
      • 1...Sc5
        • 2.Qe2#
      • 1...Sg5
        • 2.Qe2#
      • 1...Sf6
        • 2.Qe2#
      • 1...Sf7
        • 2.Qxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • S(c);OGATE::QAB1(F)
    • S(c);N_GUARD,S_CUTB(d)::S(A)
    • S(e);N_GUARD,XB(E)::QAB1(F),XS(c)
    • S(e);N_GUARD::QAB1(F),XS(c)
  • Actual
    • K(B);S_FLIGHT
    • Threat
      • S(C)
    • Vars
      • K(a);P_SPINS(c),S_FLIGHT::QAB(F)
      • S(c);SBLOCK,XP(D)::S(A)
      • S(e);N_GUARD,XB(E)::QAB1(F),XS(c)
      • S(c);OGATE::QAB1(F)
      • S(c);S_CUTB(d)::S(C)
      • S(e);N_GUARD::QAB1(F),XS(c)
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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).