MESON Chess Problem Database

Problem Display
PID: 149041 (1N6/n1N5/p2P4/Ppk1B1R1/1nprpP2/2pp2K1/b1p1P3/8 w - - 0 1)

Dawson, Thomas Rayner

Four-Leaved Shamrock, 1913

1N6/n1N5/p2P4/Ppk1B1R1/1nprpP2/2pp2K1/b1p1P3/8

#2

9 + 12

15256 TRD Scrapbook 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Rd5
      • 2.Se6#
    • 1...Sd5
      • 2.Scxa6#
    • 1...Sbc6
      • 2.Sbxa6#
    • 1...Sac6
      • 2.Sd7#
  • Keys
    • 1.e3!
      • threat
        • 2.exd4#
      • 1...Rxd6
        • 2.Bd4#
      • 1...Sd5
        • 2.Scxa6#
      • 1...Sbc6
        • 2.Sbxa6#
      • 1...Rd5
        • 2.Se6#
      • 1...Sac6
        • 2.Sd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • R(g);SBLOCK::S(H)
    • S(e);N_GUARD,SBLOCK::S(H),XP(k)
    • S(e);N_GUARD,SBLOCK::S(I),XP(k)
    • S(l);SBLOCK::S(I)
  • Actual
    • P(A);
    • Threat
      • P(A),XR(g)
    • Vars
      • R(g);SBLOCK,XP(G)::R(F)+B(E),DCHECK
      • S(e);N_GUARD,SBLOCK::S(H),XP(k)
      • S(e);N_GUARD,SBLOCK::S(I),XP(k)
      • R(g);SBLOCK::S(H)
      • S(l);SBLOCK::S(I)
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