MESON Chess Problem Database

Problem Display
PID: 41263 (3Q3K/4N3/8/3Bk3/8/2R5/8/8 w - - 0 1)

Juhe, Heinrich

Illustrierte Beobachter, 1939

3Q3K/4N3/8/3Bk3/8/2R5/8/8

#2

5 + 1

5454 Near Snap 2011

SOLUTION

  • SOUND
  • Tries
    • 1.Rg3?
      • 1...Kf4
        • 2.Qc7#
        • 2.Qd6#
        • 2.Qb8#
      • 1...Kf6
        • 2.Qd6#
      • 1...Kd4!
    • 1.Qd6+?
      • 1...Kd4
        • 2.Qf6#
      • 1...Kxd6!
    • 1.Qf8?
      • 1...Kd4
        • 2.Qg7#
        • 2.Qf6#
      • 1...Kd6!
  • Keys
    • 1.Qg8!
      • 1...Kd4
        • 2.Qg7#
      • 1...Kf4
        • 2.Qg3#
      • 1...Kd6
        • 2.Qe6#
      • 1...Kf6
        • 2.Qg7#

This anticipates 176171(1960), 231028(1969), 199603(1996), 142483(2006), 231062(2011)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(A);
      • Vars
        • K(a);S_FLIGHT::QAR2(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB(D)
      • Refutation
        • K(a);S_FLIGHT,XQ(D)
    • Try
      • Q(D);
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(D);
    • Vars
      • K(a);S_FLIGHT::QAB(D)
      • K(a);S_FLIGHT::QAB1(D)
      • K(a);S_FLIGHT::QAR1(D)
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