MESON Chess Problem Database

Problem Display
PID: 121391 (3N4/2pPk2K/2P5/B3p3/4P3/8/8/8 w - - 0 1)

Fisher, F

Deutsches Wochenschach, 1919

3N4/2pPk2K/2P5/B3p3/4P3/8/8/8

#2

6 + 3

6490 yacpdb 2009
5454 Near Snap 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Kd6
      • 2.Bb4#
    • 1...Kf8
      • 2.Bb4#
  • Tries
    • 1.Kg7?
      • 1...Kd6
        • 2.Bb4#
      • 1...Kxd8!
    • 1.Bd2?
      • 1...Kd6
        • 2.Bb4#
      • 1...Kxd8
        • 2.Bg5#
      • 1...Kf8
        • 2.Bb4#
      • 1...Kf6!
    • 1.Bxc7?
      • 1...Kf8
        • 2.Bd6#
      • 1...Kf6!
  • Keys
    • 1.Be1!
      • 1...Kd6
        • 2.Bb4#
      • 1...Kf6
        • 2.Bh4#
      • 1...Kxd8
        • 2.Bh4#
      • 1...Kf8
        • 2.Bb4#

Anticipated by 51043(1879)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::B(B)
  • Tries
    • Try
      • K(E);P-FLIGHT
      • Vars
        • K(c);S_FLIGHT::B(B)
      • Refutation
        • K(c);P_SPINP(b),S_FLIGHT,XS(F)
    • Try
      • B(B);
      • Vars
        • K(c);S_FLIGHT::B(B)
        • K(c);S_FLIGHT,XS(F)::B(B)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • B(B);XP(b)
      • Vars
        • K(c);S_FLIGHT::B(B)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • B(B);
    • Vars
      • K(c);S_FLIGHT::B(B)
      • K(c);S_FLIGHT,XS(F)::B(B)
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