MESON Chess Problem Database

Problem Display
PID: 152941 (8/8/6R1/8/6nk/3Q3b/8/4K3 w - - 0 1)

Harley, Brian

The Observer, 1934

(First published on Sun Sep 2 1934)

8/8/6R1/8/6nk/3Q3b/8/4K3

#2

3 + 3

15290 Harley Scrapbook 2014
15239 Valois Notebooks 2019

SOLUTION

  • SOUND
  • Tries
    • 1.Qd4?
      • 1...Kg3
        • 2.Qf2#
      • 1...Bf1
        • 2.Qxg4#
      • 1...Bg2
        • 2.Qxg4#
      • 1...Kh5!
  • Keys
    • 1.Qf5!
      • 1...Kg3
        • 2.Qf2#
      • 1...Bf1
        • 2.Qxg4#
      • 1...Bg2
        • 2.Qxg4#
      • 1...Sf2
        • 2.Qg5#
      • 1...Sh2
        • 2.Qg5#
      • 1...Se3
        • 2.Qg5#
      • 1...Se5
        • 2.Qg5#
      • 1...Sf6
        • 2.Qg5#
      • 1...Sh6
        • 2.Qg5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);P_PINS(b)
      • Vars
        • K(c);S_FLIGHT::QAB1(B)
        • B(a);N_GUARD::QAR1(B),XS(b)
      • Refutation
        • K(c);N_SPINS(b),P-FLIGHT
  • Actual
    • Q(B);
    • Vars
      • K(c);P_SPINS(b),S_FLIGHT::QAB1(B)
      • B(a);N_GUARD::QAR1(B),XS(b)
      • S(b);::QAB1(B)
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