MESON Chess Problem Database

Problem Display
PID: 275084 (4KNkr/6P1/5p1p/8/8/8/8/6R1 w - - 0 1)

Birchmeier, Oskar

Die Tat, 1968

(First published on Sat Oct 12 1968)

4KNkr/6P1/5p1p/8/8/8/8/6R1

#2

4 + 4

15601 Albrecht-Leiss-Degener Collection 2024

SOLUTION

  • SOUND
  • Tries
    • 1.Sd7?
      • threat
        • 2.Sxf6#
      • 1...f5
        • 2.Sf6#
      • 1...Kh7+!
  • Keys
    • 1.Sg6!
      • threat
        • 2.gxh8Q#
      • 1...Kxg7+
        • 2.Sf8#
      • 1...Kh7+
        • 2.gxh8Q#
      • 1...Rh7
        • 2.Se7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);
      • Threat
        • S(D),XP(a)
      • Vars
        • P(a);::S(D)
      • Refutation
        • K(c);CHECK,S_FLIGHT
  • Actual
    • S(D);
    • Threat
      • PXR(d)=Q
    • Vars
      • K(c);CHECK,P-FLIGHT,XP(B)::R(A)+S(D)
      • K(c);CHECK,S_FLIGHT::PXR(d)=Q
      • R(d);SBLOCK::S(D)
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