MESON Chess Problem Database

Problem Display
PID: 269312 (3K1B2/8/2N5/1k3B2/N7/6R1/4P3/8 w - - 0 1)

Ott, Roland

Zurcher Woche, 1965

3K1B2/8/2N5/1k3B2/N7/6R1/4P3/8

#2

7 + 1

6490 yacpdb 2023

SOLUTION

  • SOUND
  • Tries
    • 1.Rb3+?
      • 1...Kc4
        • 2.Be6#
      • 1...Ka6
        • 2.Sc5#
        • 2.Bd3#
        • 2.Bc8#
        • 2.Rb6#
      • 1...Kxc6
        • 2.Be4#
      • 1...Kxa4!
  • Keys
    • 1.Rg5!
      • 1...Kxa4
        • 2.Bc2#
      • 1...Kc4
        • 2.Be6#
      • 1...Ka6
        • 2.Bc8#
      • 1...Kxc6
        • 2.Be4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);CHECK
      • Vars
        • K(a);N_GUARD,S_FLIGHT::B(D)
        • K(a);N_GUARD,S_FLIGHT,XS(E)::B(D)
      • Refutation
        • K(a);S_FLIGHT,XS(C)
  • Actual
    • R(B);
    • Vars
      • K(a);N_GUARD,S_FLIGHT,XS(C)::B(D)
      • K(a);N_GUARD,S_FLIGHT::B(D)
      • K(a);N_GUARD,S_FLIGHT,XS(E)::B(D)
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