MESON Chess Problem Database

Problem Display
PID: 75718 (1Q6/p7/q7/1Np1n3/2k1P3/1pP5/3PK3/8 w - - 0 1)

Giegold, Fritz Emil

Hofer Anzeiger, 1925

1Q6/p7/q7/1Np1n3/2k1P3/1pP5/3PK3/8

#2

6 + 6

23 Die Schwalbe 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Qb7
      • 2.Sa3#
      • 2.Sd6#
    • 1...Qc8
      • 2.Sa3#
      • 2.Sd6#
    • 1...Qa1
      • 2.Sd6#
    • 1...Qa2
      • 2.Sd6#
    • 1...Qa3
      • 2.Sxa3#
      • 2.Sd6#
    • 1...Qa4
      • 2.Sd6#
    • 1...Qa5
      • 2.Sd6#
    • 1...Qb6
      • 2.Sa3#
    • 1...Qc6
      • 2.Sa3#
    • 1...Qd6
      • 2.Sa3#
      • 2.Sxd6#
    • 1...Qe6
      • 2.Sa3#
    • 1...Qf6
      • 2.Sa3#
    • 1...Qg6
      • 2.Sa3#
    • 1...Qh6
      • 2.Sa3#
    • 1...Sf3
      • 2.d3#
    • 1...Sg4
      • 2.d3#
    • 1...Sc6
      • 2.Sd6#
      • 2.d3#
    • 1...Sg6
      • 2.d3#
    • 1...Sd7
      • 2.d3#
    • 1...Sf7
      • 2.d3#
  • Keys
    • 1.Qb6!
      • threat
        • 2.Sd6#
      • 1...Qxb5
        • 2.Qe6#
      • 1...Qxb6
        • 2.Sa3#
      • 1...Sf7
        • 2.d3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 13
  • Sets
    • Q(e);N_GUARD::S(E)
    • Q(e);N_GUARD,P_PINP(A)::S(E)
    • S(d);N_GUARD::P(A)
  • Actual
    • Q(F);
    • Threat
      • S(E)
    • Vars
      • Q(e);N_GUARD,SBLOCK,XS(E)::QAB(F)
      • Q(e);N_GUARD,XQ(F)::S(E)
      • S(d);N_GUARD::P(A)
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