MESON Chess Problem Database

Problem Display
PID: 46436 (7Q/8/7K/5p2/4Nk2/5P2/4P3/8 w - - 0 1)

Turnbull, Ronald

The Problemist, 1986

7Q/8/7K/5p2/4Nk2/5P2/4P3/8

#2

5 + 2

4883 Still More Fun with Chess Miniatures 2002
5454 Near Snap 2017

SOLUTION

  • SOUND
  • Tries
    • 1.Qb2?
      • 1...Ke3
        • 2.Qd2#
      • 1...fxe4!
    • 1.Qg7?
      • 1...fxe4
        • 2.Qg5#
      • 1...Ke3!
    • 1.Qf8?
      • 1...Ke5
        • 2.Qd6#
      • 1...Ke3!
  • Keys
    • 1.Qd8!
      • 1...Ke3
        • 2.Qd2#
      • 1...Ke5
        • 2.Qd6#
      • 1...fxe4
        • 2.Qg5#

Anticipated by 86880(1966)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(E);
      • Vars
        • K(a);S_FLIGHT::QAB1(E)
      • Refutation
        • P(b);XS(C)
    • Try
      • Q(E);
      • Vars
        • P(b);XS(C)::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);P_PINP(b)
      • Vars
        • K(a);N_SPINP(b),S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);N_SPINP(b),S_FLIGHT
  • Actual
    • Q(E);
    • Vars
      • K(a);S_FLIGHT::QAB1(E)
      • P(b);XS(C)::QAB1(E)
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