MESON Chess Problem Database

Problem Display
PID: 167313 (2k5/2P5/2R2n2/K7/8/1Q6/8/8 w - - 0 1)

Speckmann, Werner

Der Tagesspiegel (Berlin), 1982

2k5/2P5/2R2n2/K7/8/1Q6/8/8

#2

4 + 2

15148 Sadier Collection 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kd7
      • 2.Qe6#
  • Tries
    • 1.Qb7+?
      • 1...Kd7
        • 2.c8Q#
        • 2.c8R#
      • 1...Kxb7!
  • Keys
    • 1.Ka6!
      • 1...Kd7
        • 2.Qe6#
      • 1...Se4
        • 2.Qe6#
        • 2.Qh3#
      • 1...Sg4
        • 2.Qe6#
      • 1...Sd5
        • 2.Qh3#
      • 1...Sh5
        • 2.Qe6#
        • 2.Qh3#
      • 1...Sd7
        • 2.Qb7#
      • 1...Sh7
        • 2.Qe6#
        • 2.Qh3#
      • 1...Se8
        • 2.Qe6#
        • 2.Qh3#
      • 1...Sg8
        • 2.Qe6#
        • 2.Qh3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::QAB1(A)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::P=Q
      • Refutation
        • K(b);S_FLIGHT,XQ(A)
  • Actual
    • K(B);P-FLIGHT
    • Vars
      • K(b);S_FLIGHT::QAB1(A)
      • S(a);N_GUARD::QAB(A)
      • S(a);SBLOCK::QAB1(A)
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