MESON Chess Problem Database

Problem Display
PID: 51288 (2Q5/8/5Kp1/3pP3/4kB2/1NPn1nrN/8/8 w - - 0 1)

Wigan, TK

Manchester Guardian, 1956

2Q5/8/5Kp1/3pP3/4kB2/1NPn1nrN/8/8

#2

7 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Sc1
      • 2.Sc5#
    • 1...Sde1
      • 2.Sc5#
    • 1...Sb2
      • 2.Sc5#
    • 1...Sf2
      • 2.Sc5#
    • 1...Sb4
      • 2.Sc5#
    • 1...Sc5
      • 2.Sxc5#
    • 1...Sdxe5
      • 2.Sc5#
    • 1...Sfe1
      • 2.Sd2#
    • 1...Sg1
      • 2.Sd2#
    • 1...Sd2
      • 2.Sxd2#
    • 1...Sh2
      • 2.Sd2#
    • 1...Sd4
      • 2.Sd2#
    • 1...Sh4
      • 2.Sd2#
    • 1...Sfxe5
      • 2.Sd2#
    • 1...Sg5
      • 2.Sd2#
    • 1...d4
      • 2.Qb7#
      • 2.Qc6#
      • 2.Qa8#
    • 1...g5
      • 2.Qf5#
  • Tries
    • 1.Qc4+?
      • 1...Sd4
        • 2.Sd2#
      • 1...d4
        • 2.Qc6#
      • 1...dxc4!
  • Keys
    • 1.Qc5!
      • threat
        • 2.Qe3#
      • 1...Sxf4
        • 2.Sf2#
      • 1...Sxc5
        • 2.Sxc5#
      • 1...Sfxe5
        • 2.Sd2#
      • 1...Sfe1
        • 2.Sd2#
      • 1...Sg1
        • 2.Sd2#
      • 1...Sd2
        • 2.Sxd2#
      • 1...Sh2
        • 2.Sd2#
      • 1...Sd4
        • 2.Sd2#
      • 1...Sh4
        • 2.Sd2#
      • 1...Sg5
        • 2.Sd2#
      • 1...d4
        • 2.Qc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 7
  • Sets
    • S(a);N_GUARD::S(A)
    • S(a);N_GUARD::S(A),XS(a)
    • S(a);N_GUARD,XP(E)::S(A)
    • S(b);N_GUARD::S(A)
    • S(b);N_GUARD::S(A),XS(b)
    • S(b);N_GUARD,XP(E)::S(A)
    • P(f);N_GUARD::QAB1(G)
  • Tries
    • Try
      • Q(G);CHECK
      • Vars
        • S(b);P_SPINS(b)::S(A)
        • P(e);OGATEB,P_SPINP(e)::QAB(G)
      • Refutation
        • P(e);XQ(G)
  • Actual
    • Q(G);
    • Threat
      • QAR1(G)
    • Vars
      • S(a);N_GUARD,SBLOCK,XB(D)::S(C)
      • S(a);XQ(G)::S(A),XS(a)
      • S(b);N_GUARD,XP(E)::S(A)
      • S(b);N_GUARD::S(A)
      • S(b);N_GUARD::S(A),XS(b)
      • P(e);OGATEB::QAB(G)
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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).