MESON Chess Problem Database

Problem Display
PID: 108224 (3K4/4P3/4N3/3k4/5Q2/8/8/8 w - - 0 1)

Brieger, Robert Sinclair

Northwest Chess, 1974

3K4/4P3/4N3/3k4/5Q2/8/8/8

#2

4 + 1

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qe4+?
      • 1...Kd6
        • 2.e8S#
      • 1...Kxe4!
    • 1.e8S?
      • 1...Kxe6
        • 2.Sc7#
      • 1...Kc6!
  • Keys
    • 1.e8B!
      • 1...Kxe6
        • 2.Bf7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P-FLIGHT::P=S
      • Refutation
        • K(a);S_FLIGHT,XQ(A)
    • Try
      • P(C);
      • Vars
        • K(a);S_FLIGHT,XS(B)::S(C)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • P(C);
    • Vars
      • K(a);OGATEB,S_FLIGHT,XS(B)::B(C)
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