MESON Chess Problem Database

Problem Display
PID: 176162 (8/1R2B3/6B1/3k4/8/8/3KN3/8 w - - 0 1)

Erhardt, Friedrich

Schach-Echo, 1955

8/1R2B3/6B1/3k4/8/8/3KN3/8

#2

5 + 1

5454 Near Snap 2018
6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Bf7#
    • 1...Kc6
      • 2.Be4#
  • Tries
    • 1.Rb6?
      • 1...Kc4
        • 2.Bf7#
      • 1...Ke5!
  • Keys
    • 1.Bf5!
      • 1...Kc4
        • 2.Be6#
      • 1...Ke5
        • 2.Rb5#
      • 1...Kc6
        • 2.Be4#

Anticipated by 195072(1918)

This anticipates 140913(1971), 94990(2003)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::B(C)
  • Tries
    • Try
      • R(D);
      • Vars
        • K(a);S_FLIGHT::B(C)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • B(C);
    • Vars
      • K(a);S_FLIGHT::B(C)
      • K(a);P-FLIGHT::R(D)
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