MESON Chess Problem Database

Problem Display
PID: 148109 (5R2/1N1p4/2p5/1pB3K1/nbk1B3/2P2P2/P1P1b3/1N6 w - - 0 1)

Dawson, Thomas Rayner

Four-Leaved Shamrock, 1912

5R2/1N1p4/2p5/1pB3K1/nbk1B3/2P2P2/P1P1b3/1N6

#2

10 + 7

15256 TRD Scrapbook 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Bd3
      • 2.cxd3#
    • 1...Bxc3
      • 2.Sa3#
    • 1...Bxc5
      • 2.Sa5#
    • 1...Sxc3
      • 2.Sd2#
    • 1...Sxc5
      • 2.Sd6#
  • Tries
    • 1.Bxb4?
      • threat
        • 2.Sd2#
        • 2.Sa3#
        • 2.Sa5#
        • 2.Sd6#
      • 1...d6
        • 2.Sd2#
        • 2.Sa3#
        • 2.Sa5#
        • 2.Sxd6#
      • 1...Sxc3!
    • 1.Rf5?
      • threat
        • 2.Sd6#
      • 1...Bxc5
        • 2.Sa5#
      • 1...d6
        • 2.Sxd6#
      • 1...d5!
    • 1.cxb4?
      • threat
        • 2.Sa5#
        • 2.Sd6#
      • 1...d6
        • 2.Sa5#
        • 2.Sxd6#
      • 1...Sxc5!
  • Keys
    • 1.Rf4!
      • threat
        • 2.Bxc6#
      • 1...Bxf3
        • 2.Bxf3#
      • 1...Bxc3
        • 2.Sa3#
      • 1...Bxc5
        • 2.Sa5#
      • 1...Sxc3
        • 2.Sd2#
      • 1...Sxc5
        • 2.Sd6#
      • 1...Bd3
        • 2.cxd3#
      • 1...d5
        • 2.Bd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(a);OGATE::P(C),XB(a)
    • B(c);N_GUARD,SBLOCK,XP(D)::S(A)
    • B(c);N_GUARD,SBLOCK,XB(G)::S(I)
    • S(b);SBLOCK,XP(D)::S(A)
    • S(b);SBLOCK,XB(G)::S(I)
  • Tries
    • Try
      • B(G);XB(c)
      • Threat
        • DUALS(4)
      • Refutation
        • S(b);XP(D)
    • Try
      • R(J);
      • Threat
        • S(I)
      • Vars
        • B(c);N_GUARD,XB(G)::S(I)
        • P(g);::S(I),XP(g)
      • Refutation
        • P(g);
    • Try
      • P(D);XB(c)
      • Threat
        • DUALS(2)
      • Refutation
        • S(b);XB(G)
  • Actual
    • R(J);
    • Threat
      • R(J)+B(F),XP(f)
    • Vars
      • B(a);OGATE,XP(E)::R(J)+B(F),XB(a)
      • B(c);N_GUARD,SBLOCK,XP(D)::S(A)
      • B(c);N_GUARD,SBLOCK,XB(G)::S(I)
      • S(b);SBLOCK,XP(D)::S(A)
      • S(b);SBLOCK,XB(G)::S(I)
      • B(a);OGATE::P(C),XB(a)
      • P(g);SBLOCK::R(J)+B(F),DCHECK
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