MESON Chess Problem Database

Problem Display
PID: 154169 (Q1KR1bb1/4pq2/5p2/3P4/2p1kBB1/2PN4/2R2P2/4n3 w - - 0 1)

Mackenzie, Arthur Ford

Jamaica Tri-Weekly Gleaner, 1883

Q1KR1bb1/4pq2/5p2/3P4/2p1kBB1/2PN4/2R2P2/4n3

#2

10 + 8

15351 SCPF/BCPS Black Books 2015

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd3
      • 2.Bf5#
    • 1...Qe6+
      • 2.dxe6#
    • 1...cxd3
      • 2.Qa4#
  • Tries
    • 1.f3+?
      • 1...Kxd3
        • 2.Bf5#
      • 1...Sxf3!
    • 1.d6+?
      • 1...Kxd3
        • 2.Bf5#
      • 1...Qd5!
  • Keys
    • 1.Bc7!
      • threat
        • 2.Sc5#
      • 1...Qe6+
        • 2.dxe6#
      • 1...Kxd3
        • 2.Bf5#
      • 1...Sxd3
        • 2.Re2#
      • 1...cxd3
        • 2.Qa4#
      • 1...e5
        • 2.dxe5 ep#
      • 1...e6
        • 2.dxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT,XS(D)::B(F)
    • Q(f);CHECK,OGATE::QAB(H)+P(G),XQ(f)
    • P(b);OGATEB,SBLOCK,XS(D)::QAR(H)
  • Tries
    • Try
      • P(B);CHECK
      • Vars
        • K(c);S_FLIGHT,XS(D)::B(F)
      • Refutation
        • S(a);XP(B)
    • Try
      • P(G);CHECK
      • Vars
        • K(c);S_FLIGHT,XS(D)::B(F)
      • Refutation
        • Q(f);P_SPINQ(f)
  • Actual
    • B(E);
    • Threat
      • S(D)
    • Vars
      • Q(f);CHECK,OGATE::QAB(H)+P(G),XQ(f)
      • K(c);S_FLIGHT,XS(D)::B(F)
      • S(a);SBLOCK,XS(D)::R(A)
      • P(b);OGATEB,SBLOCK,XS(D)::QAR(H)
      • P(e);OGATE::QAB(H)+P(G),XP(e),EP
      • P(e);OGATE::QAB(H)+P(G),XP(e)
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