MESON Chess Problem Database

Problem Display
PID: 147862 (b4nQ1/2N2R2/B1kpp3/K7/3P4/2Pn4/8/8 w - - 0 1)

Dawson, Thomas Rayner

Four-Leaved Shamrock, 1911

b4nQ1/2N2R2/B1kpp3/K7/3P4/2Pn4/8/8

#2

7 + 6

15256 TRD Scrapbook 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Bb7
      • 2.Bb5#
    • 1...Sg6
      • 2.Qxa8#
      • 2.Qe8#
    • 1...Sh7
      • 2.Qxa8#
      • 2.Qe8#
  • Keys
    • 1.Sd5!
      • 1...Kxd5
        • 2.Qg2#
      • 1...exd5
        • 2.Bb5#
      • 1...Bb7
        • 2.Bxb7#
      • 1...Sc1
        • 2.Sb4#
      • 1...Se1
        • 2.Sb4#
      • 1...Sb2
        • 2.Sb4#
      • 1...Sf2
        • 2.Sb4#
      • 1...Sb4
        • 2.Sxb4#
      • 1...Sf4
        • 2.Sb4#
      • 1...Sc5
        • 2.Sb4#
      • 1...Se5
        • 2.Sb4#
      • 1...Sg6
        • 2.Qxa8#
      • 1...Sd7
        • 2.Qxa8#
      • 1...Sh7
        • 2.Qxa8#
      • 1...e5
        • 2.Rc7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 14
    • REMOVED MATES = 0
  • Sets
    • B(e);SBLOCK::B(D)
  • Actual
    • S(E);
    • Vars
      • K(b);OGATEB,S_FLIGHT,XS(E)::QAB(G)
      • P(d);SBLOCK,XS(E)::B(D)
      • B(e);N_GUARD::B(D),XB(e)
      • S(a);N_GUARD::S(E)
      • S(a);N_GUARD::S(E),XS(a)
      • S(f);OGATE::QAB(G),XB(e)
      • P(d);::R1(F)
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