MESON Chess Problem Database

Problem Display
PID: 149263 (b7/1k6/3K4/2Q5/8/8/8/8 w - - 0 1)

Dehler, Ernst Georg

Deutsche Schachzeitung, 1924

b7/1k6/3K4/2Q5/8/8/8/8

#2

2 + 2

15148 Sadier Collection 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Kb8
      • 2.Qc7#
  • Tries
    • 1.Kd7?
      • 1...Kb8
        • 2.Qc7#
      • 1...Ka6!
    • 1.Qb6+?
      • 1...Kc8
        • 2.Qc7#
      • 1...Kxb6!
    • 1.Qa7+?
      • 1...Kc8
        • 2.Qc7#
        • 2.Qxa8#
      • 1...Kxa7!
    • 1.Qc6+?
      • 1...Kb8
        • 2.Qc7#
      • 1...Ka7!
  • Keys
    • 1.Qa5!
      • 1...Kb8
        • 2.Qc7#
      • 1...Kc8
        • 2.Qc7#
        • 2.Qxa8#

FEATURES

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