MESON Chess Problem Database

Problem Display
PID: 148164 (1B1N4/2p5/3P1N2/2k5/2p1p1KR/2p5/2P3B1/1Q6 w - - 0 1)

Dawson, Thomas Rayner

Four-Leaved Shamrock, 1912

1B1N4/2p5/3P1N2/2k5/2p1p1KR/2p5/2P3B1/1Q6

#2

9 + 5

15256 TRD Scrapbook 2013

SOLUTION

  • SOUND
  • Sets
    • 1...cxd6
      • 2.Ba7#
    • 1...c6
      • 2.Se6#
  • Tries
    • 1.Kf4?
      • 1...Kd4
        • 2.Se6#
      • 1...Kxd6
        • 2.Qb4#
      • 1...cxd6
        • 2.Ba7#
      • 1...c6
        • 2.Se6#
      • 1...e3!
    • 1.Sb7+?
      • 1...Kc6
        • 2.Bxe4#
      • 1...Kd4!
    • 1.Rh5+?
      • 1...Kxd6
        • 2.Qb4#
      • 1...Kd4!
  • Keys
    • 1.Kf5!
      • 1...Kd4
        • 2.Qg1#
      • 1...Kxd6
        • 2.Qb4#
      • 1...cxd6
        • 2.Ba7#
      • 1...e3
        • 2.Sb7#
      • 1...c6
        • 2.Se6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(e);SBLOCK,XP(F)::B(H)
    • P(e);SBLOCK::S(I)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Vars
        • K(d);S_FLIGHT::S(I)
        • K(d);P_SPINP(e),S_FLIGHT,XP(F)::QAB(A)
        • P(e);SBLOCK,XP(F)::B(H)
        • P(e);SBLOCK::S(I)
      • Refutation
        • P(c);
    • Try
      • S(I);CHECK
      • Vars
        • K(d);P-FLIGHT,P_SPINP(c)::B(C),XP(c)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • R(E);CHECK
      • Vars
        • K(d);P_SPINP(e),S_FLIGHT,XP(F)::QAB(A)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • K(D);S_FLIGHT
    • Vars
      • K(d);P_SPINP(c),S_FLIGHT::QAB(A)
      • K(d);P_SPINP(e),S_FLIGHT,XP(F)::QAB(A)
      • P(e);SBLOCK,XP(F)::B(H)
      • P(c);::S(I)
      • P(e);SBLOCK::S(I)
HTML5 logo

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).