MESON Chess Problem Database

Problem Display
PID: 178032 (5K2/3p4/4k3/Q7/6P1/8/8/8 w - - 0 1)

Donk, PP

Probleemblad, 1979

5K2/3p4/4k3/Q7/6P1/8/8/8

#2

3 + 2

5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kf6
      • 2.Qf5#
    • 1...d6
      • 2.Qf5#
  • Tries
    • 1.Qd5+?
      • 1...Kf6
        • 2.Qf5#
      • 1...Kxd5!
    • 1.Qg5?
      • 1...d5
        • 2.Qe7#
      • 1...d6
        • 2.Qf5#
      • 1...Kd6!
  • Keys
    • 1.Qc5!
      • 1...Kf6
        • 2.Qf5#
      • 1...d5
        • 2.Qe7#
      • 1...d6
        • 2.Qf5#

Anticipated by 232326(1971)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::QAR1(B)
    • P(b);SBLOCK::QAB1(B)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT,XQ(B)
    • Try
      • Q(B);
      • Vars
        • P(b);SBLOCK::QAR1(B)
        • P(b);SBLOCK::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(B);
    • Vars
      • K(a);P-FLIGHT::QAR1(B)
      • P(b);SBLOCK::QAR1(B)
      • P(b);SBLOCK::QAB1(B)
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