MESON Chess Problem Database

Problem Display
PID: 79468 (8/8/8/4p3/2Q3NK/4Nk2/8/7b w - - 0 1)

Davey, David Murray

The Tablet, 1965

(First published on Sat May 22 1965)

8/8/8/4p3/2Q3NK/4Nk2/8/7b

#2

4 + 3

15239 Valois Notebooks 2017

SOLUTION

  • SOUND
  • Sets
    • 1...e4
      • 2.Qf1#
  • Tries
    • 1.Kh3?
      • 1...e4
        • 2.Qf1#
      • 1...Bg2+!
    • 1.Sd1?
      • 1...e4
        • 2.Qf1#
      • 1...Bg2
        • 2.Sh2#
        • 2.Sxe5#
      • 1...Kg2!
    • 1.Sc2?
      • threat
        • 2.Se1#
      • 1...e4
        • 2.Qf1#
      • 1...Kg2!
    • 1.Sd5?
      • 1...Bg2
        • 2.Qd3#
      • 1...e4
        • 2.Qf1#
      • 1...Kg2!
    • 1.Qc2?
      • 1...Kf4
        • 2.Qf5#
      • 1...e4
        • 2.Qf2#
      • 1...Bg2!
  • Keys
    • 1.Qd3!
      • 1...Kf4
        • 2.Qf5#
      • 1...Bg2
        • 2.Sd5#
      • 1...e4
        • 2.Qf1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(c);SBLOCK::QAR2(B)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Vars
        • P(c);SBLOCK::QAR2(B)
      • Refutation
        • B(a);CHECK
    • Try
      • S(A);
      • Vars
        • P(c);SBLOCK::QAR2(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(A);
      • Threat
        • S(A)
      • Vars
        • P(c);SBLOCK::QAR2(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(A);
      • Vars
        • B(a);SBLOCK::QAR2(B)
        • P(c);SBLOCK::QAR2(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(b);P-FLIGHT::QAR1(B)
        • P(c);SBLOCK::QAR1(B)
      • Refutation
        • B(a);
  • Actual
    • Q(B);
    • Vars
      • K(b);P-FLIGHT::QAR1(B)
      • B(a);SBLOCK::QAR(B)+S(A)
      • P(c);SBLOCK::QAR2(B)
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