MESON Chess Problem Database

Problem Display
PID: 11663 (4k3/3NPN2/8/3K4/8/8/8/1Q6 w - - 0 1)

Froberg, Johan Hilding Laurentius

1st Comm., Skakbladet, 1970

4k3/3NPN2/8/3K4/8/8/8/1Q6

#2

5 + 1

SOLUTION

  • SOUND
  • Tries
    • 1.Sd6+?
      • 1...Kxd7
        • 2.Qb7#
      • 1...Kxe7!
    • 1.Qg6?
      • 1...Kxe7
        • 2.Qe6#
      • 1...Kxd7!
    • 1.Qb6?
      • 1...Kxd7
        • 2.Qd8#
      • 1...Kxe7
        • 2.Qe6#
      • 1...Kxf7!
  • Keys
    • 1.Qf5!
      • 1...Kxe7
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(a);S_FLIGHT,XS(C)::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT,XP(D)
    • Try
      • Q(A);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XP(D)::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT,XS(C)
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT,XS(C)::QAR1(A)
        • K(a);OGATEB,P-FLIGHT,XP(D)::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT,XS(E)
  • Actual
    • Q(A);
    • Vars
      • K(a);OGATEB,P-FLIGHT,XP(D)::QAR1(A)
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