MESON Chess Problem Database

Problem Display
PID: 140968 (8/6p1/1KNk1pnR/4p3/4P1BQ/3p4/8/8 w - - 0 1)

Stephenson, Brian D

Mightiest of Minds Solving Ty., 2011

8/6p1/1KNk1pnR/4p3/4P1BQ/3p4/8/8

#2

6 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...f5
      • 2.Qe7#
    • 1...gxh6
      • 2.Qxf6#
  • Tries
    • 1.Qe1?
      • threat
        • 2.Qb4#
      • 1...d2
        • 2.Qxd2#
      • 1...f5!
  • Keys
    • 1.Qg5!
      • 1...fxg5
        • 2.Rxg6#
      • 1...gxh6
        • 2.Qxf6#
      • 1...f5
        • 2.Qe7#
      • 1...Sf4
        • 2.Qxe5#
      • 1...Sh4
        • 2.Qxe5#
      • 1...Se7
        • 2.Qxe5#
      • 1...Sf8
        • 2.Qxe5#
      • 1...Sh8
        • 2.Qxe5#
      • 1...d2
        • 2.Qxd2#

This is a version of 30798

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • P(d);OGATE,P_SPINS(e)::QAB1(C)
    • P(f);N_GUARD,XR(F)::QAR2(C),XP(d)
  • Tries
    • Try
      • Q(C);
      • Threat
        • QAB(C)
      • Vars
        • P(a);OGATEB::QAR(C),XP(a)
      • Refutation
        • P(d);P_SPINS(e)
  • Actual
    • Q(C);
    • Vars
      • P(d);OGATEB,P_SPINS(e),XQ(C)::R(F),XS(e)
      • P(f);N_GUARD,XR(F)::QAR2(C),XP(d)
      • P(d);OGATE,P_SPINS(e)::QAB1(C)
      • S(e);N_GUARD,P_SPINP(d)::QAB1(C),XP(b)
      • P(a);OGATEB::QAR(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).