MESON Chess Problem Database

Problem Display
PID: 219461 (4Q3/8/4N3/4k3/N3P3/5K2/8/8 w - - 0 1)

Speckmann, Werner

Schach-Report, 1990

4Q3/8/4N3/4k3/N3P3/5K2/8/8

#2

5 + 1

6490 yacpdb 2020
5454 Near Snap 2023

SOLUTION

  • SOUND
  • Tries
    • 1.Sb2?
      • 1...Kd6
        • 2.Sc4#
      • 1...Kf6!
    • 1.Sac5?
      • 1...Kf6
        • 2.Sd7#
      • 1...Kd6!
  • Keys
    • 1.Sb6!
      • 1...Kd6
        • 2.Sc4#
      • 1...Kf6
        • 2.Sd7#

This anticipates 244995(1999), 79155(2004)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);
      • Vars
        • K(a);S_FLIGHT::S(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(B);
      • Vars
        • K(a);S_FLIGHT::S(B)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(B);
    • Vars
      • K(a);S_FLIGHT::S(B)
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