MESON Chess Problem Database

Problem Display
PID: 231778 (1k6/NP6/4K3/1N6/8/8/1Q6/8 w - - 0 1)

Speckmann, Werner

Deutsche Schachzeitung, 1970

1k6/NP6/4K3/1N6/8/8/1Q6/8

#2

5 + 1

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Sa3?
      • 1...Kc7
        • 2.b8Q#
      • 1...Kxa7!
    • 1.Sc3?
      • 1...Kc7
        • 2.b8Q#
      • 1...Kxa7!
    • 1.Sd4?
      • 1...Kc7
        • 2.b8Q#
      • 1...Kxa7!
    • 1.Sd6?
      • 1...Kc7
        • 2.b8Q#
      • 1...Kxa7!
  • Keys
    • 1.Sc7!
      • 1...Kxa7
        • 2.b8Q#
        • 2.b8B#
      • 1...Kxc7
        • 2.b8Q#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);
      • Vars
        • K(a);OGATE,S_FLIGHT::P=Q
      • Refutation
        • K(a);S_FLIGHT,XS(D)
    • Try
      • S(B);
      • Vars
        • K(a);OGATE,S_FLIGHT::P=Q
      • Refutation
        • K(a);S_FLIGHT,XS(D)
    • Try
      • S(B);
      • Vars
        • K(a);OGATE,S_FLIGHT::P=Q
      • Refutation
        • K(a);S_FLIGHT,XS(D)
    • Try
      • S(B);
      • Vars
        • K(a);OGATE,S_FLIGHT::P=Q
      • Refutation
        • K(a);S_FLIGHT,XS(D)
  • Actual
    • S(B);
    • Vars
      • K(a);OGATE,S_FLIGHT,XS(D)::P=Q
      • K(a);OGATE,S_FLIGHT,XS(B)::P=Q
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