MESON Chess Problem Database

Problem Display
PID: 18138 (8/4N2n/7p/5p1k/4N1pp/7Q/4B1K1/8 w - - 0 1)

Eaves, Rufus

Time & Tide, 1953

8/4N2n/7p/5p1k/4N1pp/7Q/4B1K1/8

#2

5 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Sg5
      • 2.Sg3#
      • 2.Sf6#
    • 1...fxe4
      • 2.Qxg4#
    • 1...f4
      • 2.Bxg4#
      • 2.Qxg4#
  • Tries
    • 1.Sd5?
      • threat
        • 2.Sf4#
      • 1...fxe4
        • 2.Qxg4#
      • 1...f4
        • 2.Sxf4#
        • 2.Qxg4#
      • 1...Kg6!
    • 1.Sg6?
      • threat
        • 2.Sf4#
      • 1...fxe4
        • 2.Qxg4#
      • 1...f4
        • 2.Sxf4#
        • 2.Qxg4#
      • 1...Kxg6!
  • Keys
    • 1.Qf3!
      • 1...gxf3+
        • 2.Bxf3#
      • 1...h3+
        • 2.Qxh3#
      • 1...fxe4
        • 2.Qxg4#
      • 1...Sf6
        • 2.Qxf5#
      • 1...Sg5
        • 2.Sf6#
      • 1...Sf8
        • 2.Qxf5#
      • 1...f4
        • 2.Qxg4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • P(c);N_GUARD,XS(D)::QAB1(C),XP(a)
  • Tries
    • Try
      • S(E);
      • Threat
        • S(E)
      • Vars
        • P(c);N_GUARD,XS(D)::QAB1(C),XP(a)
      • Refutation
        • K(d);N_SPINP(a),S_FLIGHT
    • Try
      • S(E);
      • Threat
        • S(E)
      • Vars
        • P(c);N_GUARD,XS(D)::QAB1(C),XP(a)
      • Refutation
        • K(d);N_SPINP(a),S_FLIGHT,XS(E)
  • Actual
    • Q(C);
    • Vars
      • P(a);CHECK,OGATE,XQ(C)::B(A),XP(a)
      • P(b);CHECK,OGATEB::QAR2(C),XP(b)
      • P(c);N_GUARD,XS(D)::QAB1(C),XP(a)
      • S(f);N_GUARD::QAR2(C),XP(c)
      • S(f);N_GUARD,SBLOCK::S(D)
      • P(c);N_GUARD::QAB1(C),XP(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).