MESON Chess Problem Database

Problem Display
PID: 22407 (5N2/1RB2Bk1/7N/8/3K4/8/8/8 w - - 0 1)

Ott, Roland

Schweizerische Schachzeitung, 1965

5N2/1RB2Bk1/7N/8/3K4/8/8/8

#2

6 + 1

5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kh8
      • 2.Be5#
  • Tries
    • 1.Bh5?
      • 1...Kf6
        • 2.Bd8#
      • 1...Kxf8
        • 2.Bd6#
      • 1...Kh8
        • 2.Be5#
      • 1...Kxh6!
    • 1.Be8?
      • 1...Kf6
        • 2.Bd8#
      • 1...Kxh6
        • 2.Bf4#
      • 1...Kh8
        • 2.Be5#
      • 1...Kxf8!
    • 1.Rb6?
      • 1...Kh8
        • 2.Be5#
      • 1...Kxf8!
  • Keys
    • 1.Bg6!
      • 1...Kf6
        • 2.Bd8#
      • 1...Kxh6
        • 2.Bf4#
      • 1...Kxf8
        • 2.Bd6#
      • 1...Kh8
        • 2.Be5#

This anticipates 210744(1968)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::B(D)
  • Tries
    • Try
      • B(E);
      • Vars
        • K(a);S_FLIGHT::B(D)
        • K(a);S_FLIGHT,XS(F)::B(D)
      • Refutation
        • K(a);S_FLIGHT,XS(B)
    • Try
      • B(E);
      • Vars
        • K(a);S_FLIGHT::B(D)
        • K(a);S_FLIGHT,XS(B)::B(D)
      • Refutation
        • K(a);S_FLIGHT,XS(F)
    • Try
      • R(C);
      • Vars
        • K(a);S_FLIGHT::B(D)
      • Refutation
        • K(a);S_FLIGHT,XS(F)
  • Actual
    • B(E);
    • Vars
      • K(a);S_FLIGHT::B(D)
      • K(a);S_FLIGHT,XS(B)::B(D)
      • K(a);S_FLIGHT,XS(F)::B(D)
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