MESON Chess Problem Database

Problem Display
PID: 139198 (6n1/2b5/8/p1B4p/k5nR/5P1K/P4p2/5B1Q w - - 0 1)

Kipping, Cyril Stanley

The Problemist, 1937

6n1/2b5/8/p1B4p/k5nR/5P1K/P4p2/5B1Q

#2

7 + 7

SOLUTION

  • SOUND
  • Tries
    • 1.Rxg4+?
      • 1...Bf4
        • 2.Rxf4#
      • 1...hxg4+!
    • 1.fxg4?
      • threat
        • 2.Qe4#
        • 2.Qc6#
      • 1...Be5
        • 2.Qc6#
      • 1...Sf6
        • 2.Qc6#
      • 1...Se7
        • 2.Qe4#
      • 1...hxg4+!
  • Keys
    • 1.f4!
      • threat
        • 2.Qe4#
        • 2.Qc6#
      • 1...Be5
        • 2.Qc6#
      • 1...Se3
        • 2.Qc6#
      • 1...Se5
        • 2.fxe5#
      • 1...S4f6
        • 2.Qc6#
      • 1...S8f6
        • 2.Qc6#
      • 1...Se7
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(F);CHECK,XS(c)
      • Vars
        • B(f);N_GUARD,P_SPINB(f)::R(F),XB(f)
      • Refutation
        • P(e);CHECK,XR(F)
    • Try
      • P(D);XS(c)
      • Threat
        • DUALS(2)
      • Vars
        • B(f);::QAB(B)
        • S(g);::QAB(B)
        • S(g);::QAR(B)
      • Refutation
        • P(e);CHECK,P_SPINP(e),XP(D)
  • Actual
    • P(D);N_PINS(c)
    • Threat
      • DUALS(2)
    • Vars
      • B(f);::QAB(B)
      • S(c);::QAB(B)
      • S(c);OGATE::R(F)+P(D),XS(c)
      • S(g);::QAB(B)
      • S(g);::QAR(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).