MESON Chess Problem Database

Problem Display
PID: 231090 (7Q/3K4/8/5Pk1/6P1/7P/5P2/8 w - - 0 1)

Goldschmidt, Ervin

Pesti Naplo, 1927

7Q/3K4/8/5Pk1/6P1/7P/5P2/8

#2

6 + 1

5454 Near Snap 2021
6490 yacpdb 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Qg7+?
      • 1...Kh4
        • 2.Qh6#
      • 1...Kf4!
    • 1.Qh7?
      • 1...Kf6
        • 2.Qe7#
      • 1...Kf4!
    • 1.Qf8?
      • 1...Kh4
        • 2.Qh6#
      • 1...Kf4!
    • 1.f6?
      • 1...Kg6
        • 2.Qg7#
      • 1...Kf4!
  • Keys
    • 1.Qe8!
      • 1...Kf4
        • 2.Qe3#
      • 1...Kh4
        • 2.Qh5#
      • 1...Kf6
        • 2.Qe7#
      • 1...Kh6
        • 2.Qg6#

This anticipates 33184(1938), 16378(1940), 30942(1943), 47022(1955), 73436(1961), 12363(1978), 46971(1989), 142078(1989), 84992(1992), 120638(1995), 79159(2005)

There are these versions: 24210

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(F);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR2(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);
      • Vars
        • K(a);S_FLIGHT::QAB1(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);
      • Vars
        • K(a);S_FLIGHT::QAR2(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • P(D);
      • Vars
        • K(a);P-FLIGHT::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(F);
    • Vars
      • K(a);S_FLIGHT::QAB1(F)
      • K(a);S_FLIGHT::QAR1(F)
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