MESON Chess Problem Database

Problem Display
PID: 18284 (8/5K2/4N3/2p2k2/2PPp3/3PPp2/3Q3N/8 w - - 0 1)

Harley, Brian

Time & Tide, 1954

(First published on Sat Apr 24 1954)

8/5K2/4N3/2p2k2/2PPp3/3PPp2/3Q3N/8

#2

8 + 4

15290 Harley Scrapbook 2015

SOLUTION

  • SOUND
  • Sets
    • 1...f2
      • 2.Qxf2#
    • 1...exd3
      • 2.Qxd3#
    • 1...cxd4
      • 2.Qa5#
  • Tries
    • 1.Qc3?
      • 1...exd3
        • 2.Qxd3#
      • 1...cxd4
        • 2.Qa5#
      • 1...f2!
    • 1.Qd1?
      • 1...exd3
        • 2.Qxf3#
        • 2.Qxd3#
      • 1...f2
        • 2.Qg4#
        • 2.Qh5#
      • 1...cxd4!
    • 1.Qa2?
      • 1...cxd4
        • 2.Qa5#
      • 1...f2
        • 2.Qxf2#
      • 1...exd3!
    • 1.Qb2?
      • 1...cxd4
        • 2.Qb5#
      • 1...f2
        • 2.Qxf2#
      • 1...exd3!
    • 1.Qc2?
      • threat
        • 2.dxe4#
      • 1...exd3
        • 2.Qxd3#
      • 1...cxd4!
    • 1.Qf2?
      • 1...exd3
        • 2.Qxf3#
      • 1...cxd4!
    • 1.Qg2?
      • threat
        • 2.Sg7#
        • 2.Qh3#
        • 2.Qg4#
        • 2.Qg5#
        • 2.Qg6#
      • 1...exd3
        • 2.Qxf3#
        • 2.Qg4#
        • 2.Qg6#
      • 1...cxd4
        • 2.Qg5#
      • 1...fxg2!
  • Keys
    • 1.Qe1!
      • 1...exd3
        • 2.e4#
      • 1...cxd4
        • 2.Qa5#
      • 1...f2
        • 2.Qxf2#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • P(a);OGATEB::QAR(A),XP(a)
    • P(b);OGATE,XP(C)::QAB(A),XP(b)
    • P(c);OGATEB,XP(F)::QAR(A)
  • Tries
    • Try
      • Q(A);
      • Vars
        • P(b);OGATE,XP(C)::QAB(A),XP(b)
        • P(c);OGATEB,XP(F)::QAR(A)
      • Refutation
        • P(a);
    • Try
      • Q(A);
      • Refutation
        • P(c);XP(F)
    • Try
      • Q(A);
      • Vars
        • P(c);OGATEB,XP(F)::QAR(A)
        • P(a);OGATEB::QAR(A),XP(a)
      • Refutation
        • P(b);XP(C)
    • Try
      • Q(A);
      • Vars
        • P(c);OGATEB,XP(F)::QAR(A)
        • P(a);OGATEB::QAR(A),XP(a)
      • Refutation
        • P(b);XP(C)
    • Try
      • Q(A);
      • Threat
        • P(C),XP(b)
      • Vars
        • P(b);OGATE,P_SPINP(b),XP(C)::QAB(A),XP(b)
      • Refutation
        • P(c);XP(F)
    • Try
      • Q(A);P_PINP(a)
      • Vars
        • P(b);N_GUARD,XP(C)::QAR2(A),XP(a)
      • Refutation
        • P(c);XP(F)
    • Try
      • Q(A);
      • Threat
        • DUALS(5)
      • Vars
        • P(c);XP(F)::QAR1(A)
      • Refutation
        • P(a);XQ(A)
  • Actual
    • Q(A);
    • Vars
      • P(b);OGATE,XP(C)::P(D)
      • P(c);OGATEB,XP(F)::QAR(A)
      • P(a);OGATEB::QAR(A),XP(a)
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