MESON Chess Problem Database

Problem Display
PID: 147209 (b4QB1/1RbN3K/8/6p1/2n1k3/1N1p4/2n2P2/8 w - - 0 1)

Dawson, Thomas Rayner

Four-Leaved Shamrock, 1908

(First published on Mon Jun 1 1908)

b4QB1/1RbN3K/8/6p1/2n1k3/1N1p4/2n2P2/8

#2

7 + 7

15256 TRD Scrapbook 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Be5
      • 2.Sdc5#
    • 1...S2e3
      • 2.f3#
    • 1...Sd4
      • 2.Sbc5#
    • 1...S4e3
      • 2.f3#
    • 1...Se5
      • 2.Sdc5#
  • Keys
    • 1.Rb5!
      • threat
        • 2.Qf5#
      • 1...Bf4
        • 2.Qxa8#
      • 1...Be5
        • 2.Sdc5#
      • 1...Bd5
        • 2.Bxd5#
      • 1...S2e3
        • 2.f3#
      • 1...Sd4
        • 2.Sbc5#
      • 1...S4e3
        • 2.f3#
      • 1...Se5
        • 2.Sdc5#
      • 1...Sd6
        • 2.Re5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(f);SBLOCK::S(D)
    • S(a);SBLOCK::P(A)
    • S(a);SBLOCK::S(B)
    • S(c);SBLOCK::P(A)
    • S(c);SBLOCK::S(D)
  • Actual
    • R(C);
    • Threat
      • QAB1(F)
    • Vars
      • B(f);SBLOCK::QAB(F),XB(g)
      • B(f);SBLOCK::S(D)
      • B(g);N_GUARD::B(G),XB(g)
      • S(a);SBLOCK::P(A)
      • S(a);SBLOCK::S(B)
      • S(c);SBLOCK::P(A)
      • S(c);SBLOCK::S(D)
      • S(c);N_GUARD,S_CUTB(f)::R1(C)
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