MESON Chess Problem Database

Problem Display
PID: 199323 (1n6/2Q3Kb/3pp3/3Nk3/3Rp3/4NnP1/1P6/3q4 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Comm., Suomen Shakki, 1988

1n6/2Q3Kb/3pp3/3Nk3/3Rp3/4NnP1/1P6/3q4

#2

7 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd4
      • 2.Qc3#
  • Tries
    • 1.Sb6?
      • threat
        • 2.Qxd6#
      • 1...Kxd4
        • 2.Qc3#
      • 1...Sxd4
        • 2.Sbc4#
      • 1...Qxd4!
    • 1.Sf6?
      • threat
        • 2.Qxd6#
      • 1...Kxd4
        • 2.Qc3#
      • 1...Qxd4
        • 2.Sfg4#
      • 1...Sxd4!
  • Keys
    • 1.Se7!
      • threat
        • 2.Qxd6#
      • 1...Kxd4
        • 2.Qc3#
      • 1...Qxd4
        • 2.Sg4#
      • 1...Sxd4
        • 2.Sc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(d);N_SPINP(e),OGATEB,S_FLIGHT,XR(D)::QAB1(F)
  • Tries
    • Try
      • S(E);
      • Threat
        • QAB1(F),XP(e)
      • Vars
        • K(d);N_SPINP(e),OGATEB,S_FLIGHT,XR(D)::QAB1(F)
        • S(b);SBLOCK,XR(D)::S(E)
      • Refutation
        • Q(a);XR(D)
    • Try
      • S(E);
      • Threat
        • QAB1(F),XP(e)
      • Vars
        • K(d);N_SPINP(e),OGATEB,S_FLIGHT,XR(D)::QAB1(F)
        • Q(a);SBLOCK,XR(D)::S(E)
      • Refutation
        • S(b);XR(D)
  • Actual
    • S(E);
    • Threat
      • QAB1(F),XP(e)
    • Vars
      • K(d);N_SPINP(e),OGATEB,S_FLIGHT,XR(D)::QAB1(F)
      • Q(a);SBLOCK,XR(D)::S(B)
      • S(b);SBLOCK,XR(D)::S(B)
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