MESON Chess Problem Database

Problem Display
PID: 187704 (3N4/7N/q2nB3/1p1Pk3/5p2/5P2/2b2Q1K/8 w - - 0 1)

Gold, Samuel

Neues Wiener Tageblatt, 1909

3N4/7N/q2nB3/1p1Pk3/5p2/5P2/2b2Q1K/8

#2

7 + 6

6490 yacpdb 2019
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qa1
      • 2.Sc6#
    • 1...Qa2
      • 2.Sc6#
    • 1...Qa3
      • 2.Sc6#
    • 1...Qa4
      • 2.Sc6#
    • 1...Qa5
      • 2.Sc6#
    • 1...Qc6
      • 2.Sxc6#
    • 1...Qa7
      • 2.Sc6#
    • 1...Bb1
      • 2.Qb2#
    • 1...Bd1
      • 2.Qb2#
    • 1...Bb3
      • 2.Qb2#
    • 1...Bd3
      • 2.Qb2#
    • 1...Ba4
      • 2.Qb2#
    • 1...Be4
      • 2.Qb2#
    • 1...Bf5
      • 2.Qb2#
    • 1...Bg6
      • 2.Qb2#
    • 1...Bxh7
      • 2.Qb2#
    • 1...Sc4
      • 2.Sf7#
    • 1...Se4
      • 2.Sf7#
    • 1...Sf5
      • 2.Sf7#
    • 1...Sb7
      • 2.Sf7#
    • 1...Sf7
      • 2.Sxf7#
    • 1...Sc8
      • 2.Sf7#
    • 1...Se8
      • 2.Sf7#
  • Tries
    • 1.Qg1?
      • threat
        • 2.Qg7#
      • 1...Sc4
        • 2.Sf7#
      • 1...Se4
        • 2.Sf7#
      • 1...Sf5
        • 2.Sf7#
      • 1...Sb7
        • 2.Sf7#
      • 1...Sf7
        • 2.Sxf7#
      • 1...Sc8
        • 2.Sf7#
      • 1...Se8
        • 2.Sf7#
      • 1...Qb7
        • 2.Qa1#
      • 1...Qa7
        • 2.Sc6#
      • 1...Bg6!
    • 1.Qe3+?
      • 1...Be4
        • 2.Qc3#
      • 1...Se4
        • 2.Sf7#
      • 1...fxe3!
  • Keys
    • 1.Qa7!
      • threat
        • 2.Qg7#
      • 1...Qxa7
        • 2.Sc6#
      • 1...Sc4
        • 2.Sf7#
      • 1...Se4
        • 2.Sf7#
      • 1...Sf5
        • 2.Sf7#
      • 1...Sb7
        • 2.Sf7#
      • 1...Sf7
        • 2.Sxf7#
      • 1...Sc8
        • 2.Sf7#
      • 1...Se8
        • 2.Sf7#
      • 1...Qb7
        • 2.Qa1#

Anticipated by 232269(1880)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 15
  • Sets
    • Q(e);N_GUARD::S(G)
    • Q(e);N_GUARD::S(G),XQ(e)
    • B(a);OGATE::QAB(A)
    • B(a);OGATE,XS(F)::QAB(A)
    • S(f);N_GUARD::S(G)
    • S(f);N_GUARD::S(G),XS(f)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAB(A)
      • Vars
        • S(f);N_GUARD::S(G)
        • S(f);N_GUARD::S(G),XS(f)
        • Q(e);N_GUARD::QAB(A)
        • Q(e);N_GUARD::S(G)
      • Refutation
        • B(a);
    • Try
      • Q(A);CHECK
      • Vars
        • B(a);P_SPINB(a)::QAB(A)
        • S(f);P_SPINS(f)::S(G)
      • Refutation
        • P(b);XQ(A)
  • Actual
    • Q(A);
    • Threat
      • QAB(A)
    • Vars
      • Q(e);N_GUARD,XQ(A)::S(G)
      • S(f);N_GUARD::S(G)
      • S(f);N_GUARD::S(G),XS(f)
      • Q(e);OGATE::QAB(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).