MESON Chess Problem Database

Problem Display
PID: 51024 (n1Q5/rp6/p7/2P1kNB1/2P4p/K2p3r/3NnP1p/3b4 w - - 0 1)

Ireland, Alfred H

The Inquirer, 1913

n1Q5/rp6/p7/2P1kNB1/2P4p/K2p3r/3NnP1p/3b4

#2

8 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Sc1
      • 2.f4#
    • 1...Sg1
      • 2.f4#
    • 1...Sc3
      • 2.f4#
    • 1...Sg3
      • 2.f4#
    • 1...Sd4
      • 2.f4#
  • Tries
    • 1.Qd8?
      • threat
        • 2.Qf6#
        • 2.Qd5#
      • 1...Ke6
        • 2.Qd5#
      • 1...h1Q
        • 2.Qf6#
      • 1...h1B
        • 2.Qf6#
      • 1...Sc3
        • 2.Qf6#
      • 1...Sf4
        • 2.Qf6#
      • 1...Sb6
        • 2.Qf6#
      • 1...Sc7
        • 2.Qf6#
      • 1...Kxf5!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Qh8#
      • 1...Kxd4
        • 2.Bf6#
      • 1...Sxd4
        • 2.f4#
      • 1...Rf3
        • 2.S4xf3#
      • 1...b5
        • 2.Sc6#
      • 1...b6
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • S(b);N_GUARD::P(B)
  • Tries
    • Try
      • Q(H);
      • Threat
        • DUALS(2)
      • Vars
        • K(g);P-FLIGHT::QAB1(H)
        • P(c);::QAB1(H)
        • S(b);::QAB1(H)
        • S(k);::QAB1(H)
      • Refutation
        • K(g);P-FLIGHT,XS(F)
  • Actual
    • S(F);
    • Threat
      • QAB(H)
    • Vars
      • K(g);S_FLIGHT,XS(F)::B(G)
      • S(b);N_GUARD,SBLOCK,XS(F)::P(B)
      • R(e);N_GUARD::S(F),XR(e)
      • P(j);N_GUARD::S(F)
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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).