MESON Chess Problem Database

Problem Display
PID: 60770 (K7/8/8/kP5R/3Q4/8/8/8 w - - 0 1)

Massmann, Kiel

Bulletin de la FFE, 1927

K7/8/8/kP5R/3Q4/8/8/8

#2

4 + 1

133 The Problemist Supplement 2013

SOLUTION

  • SOUND
  • Tries
    • 1.Qa1+?
      • 1...Kb6
        • 2.Qa7#
      • 1...Kb4!
    • 1.Qd1?
      • 1...Kb6
        • 2.Qd8#
      • 1...Kb4!
    • 1.Qd2+?
      • 1...Kb6
        • 2.Qd8#
      • 1...Ka4!
    • 1.Qa4+?
      • 1...Kb6
        • 2.Qa7#
      • 1...Kxa4!
  • Keys
    • 1.Qh4!
      • 1...Kb6
        • 2.Qd8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::QAB(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);P-FLIGHT,XQ(A)
  • Actual
    • Q(A);
    • Vars
      • K(a);S_FLIGHT::QAB(A)
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