MESON Chess Problem Database

Problem Display
PID: 149140 (1K6/5P2/3k4/8/8/5Q2/8/8 w - - 0 1)

Dehler, Otto Georg Edgar

Die Schwalbe, 1939

1K6/5P2/3k4/8/8/5Q2/8/8

#2

3 + 1

15148 Sadier Collection 2013

SOLUTION

  • SOUND
  • Tries
    • 1.Qf5?
      • 1...Ke7
        • 2.f8Q#
      • 1...Kc6!
  • Keys
    • 1.f8Q+!
      • 1...Ke5
        • 2.Q8f6#
      • 1...Ke6
        • 2.Q3f5#
      • 1...Kd7
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::P=Q
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • P(B);CHECK
    • Vars
      • K(a);S_FLIGHT::QAB1(B)
      • K(a);P-FLIGHT::QAB1(A)
      • K(a);P-FLIGHT::QAR2(A)
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