MESON Chess Problem Database

Problem Display
PID: 17181 (8/p1p5/8/k7/8/N1K5/8/3Q4 w - - 0 1)

Junker, Karl

Deutsche Schachblatter, 1925

8/p1p5/8/k7/8/N1K5/8/3Q4

#2

3 + 3

3295 Einfuhrung in die Welt des Schachproblem 1984

SOLUTION

  • SOUND
  • Tries
    • 1.Qb3?
      • threat
        • 2.Qb5#
      • 1...Ka6
        • 2.Qb5#
      • 1...a6
        • 2.Sc4#
        • 2.Qb4#
      • 1...c6!
    • 1.Qa4+?
      • 1...Kb6
        • 2.Qb5#
      • 1...Kxa4!
    • 1.Qb1?
      • threat
        • 2.Qb5#
      • 1...Ka4
        • 2.Qb4#
      • 1...Ka6
        • 2.Qb5#
      • 1...a6
        • 2.Qb4#
      • 1...c6!
  • Keys
    • 1.Qd7!
      • threat
        • 2.Qb5#
      • 1...Ka6
        • 2.Qb5#
      • 1...Kb6
        • 2.Qb5#
      • 1...c6
        • 2.Qxa7#
      • 1...a6
        • 2.Sc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • K(a);P-FLIGHT::QAB1(A)
      • Refutation
        • P(c);
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT,XQ(A)
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • K(a);P-FLIGHT::QAR1(A)
        • K(a);P-FLIGHT::QAB1(A)
        • P(b);SBLOCK::QAB1(A)
      • Refutation
        • P(c);
  • Actual
    • Q(A);
    • Threat
      • QAR1(A)
    • Vars
      • K(a);P-FLIGHT::QAB1(A)
      • K(a);S_FLIGHT::QAR1(A)
      • P(c);OGATE::QAR2(A),XP(b)
      • P(b);SBLOCK::S(B)
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