MESON Chess Problem Database

Problem Display
PID: 51038 (n7/4K3/2p1p3/1NNk1p1b/1Pp4r/6R1/Q4n2/B7 w - - 0 1)

Stubbs, Arthur Goodwin

The Inquirer, 1914

n7/4K3/2p1p3/1NNk1p1b/1Pp4r/6R1/Q4n2/B7

#2

7 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Se4
      • 2.Rd3#
    • 1...Sg4
      • 2.Rd3#
      • 2.Qd2#
      • 2.Qg2#
    • 1...Sb6
      • 2.Sc7#
    • 1...Sc7
      • 2.Sxc7#
    • 1...cxb5
      • 2.Qxa8#
  • Tries
    • 1.Qd2+?
      • 1...Rd4
        • 2.Qxd4#
      • 1...Sd3!
  • Keys
    • 1.Sd7!
      • threat
        • 2.Sf6#
      • 1...Ke4
        • 2.Qxc4#
      • 1...cxb5
        • 2.Qxa8#
      • 1...c5
        • 2.Qxa8#
      • 1...Rd4
        • 2.Sc3#
      • 1...Se4
        • 2.Rd3#
      • 1...Sg4
        • 2.Qg2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • S(a);N_GUARD,S_CUTR(c)::R(C)
    • S(i);N_GUARD::S(E)
    • S(i);N_GUARD::S(E),XS(i)
    • P(g);OGATEB,XS(E)::QAB(B),XS(i)
  • Tries
    • Try
      • Q(B);CHECK,N_PINP(b)
      • Vars
        • R(c);N_GUARD,P_SPINR(c)::QAR1(B),XR(c)
      • Refutation
        • S(a);P_SPINS(a)
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • K(d);N_SPINP(b),S_FLIGHT::QAR2(B),XP(b)
      • P(g);OGATEB,XS(E)::QAB(B),XS(i)
      • P(g);OGATEB::QAB(B),XS(i)
      • R(c);SBLOCK::S(E)
      • S(a);N_GUARD,SBLOCK,S_CUTR(c)::R(C)
      • S(a);OGATE::QAB(B)
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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).