MESON Chess Problem Database

Problem Display
PID: 78591 (K7/1N6/6B1/1p1k4/3p4/8/8/4Q3 w - - 0 1)

Bachl, Ernst

Der Schlussel, 1950

K7/1N6/6B1/1p1k4/3p4/8/8/4Q3

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...d3
      • 2.Qe4#
  • Tries
    • 1.Qe8?
      • threat
        • 2.Bf7#
      • 1...d3
        • 2.Qe4#
      • 1...Kc4!
  • Keys
    • 1.Qb4!
      • 1...Ke5
        • 2.Qd6#
      • 1...Kc6
        • 2.Qd6#
      • 1...Ke6
        • 2.Qd6#
      • 1...d3
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(a);::QAB1(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • B(B)
      • Vars
        • P(a);::QAB1(A)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(c);P-FLIGHT::QAB1(A)
      • K(c);S_FLIGHT::QAR1(A)
      • P(a);OGATE::QAB1(A)
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