MESON Chess Problem Database

Problem Display
PID: 224311 (8/3p3K/3p4/3B2N1/4N1k1/6B1/3P2R1/8 w - - 0 1)

Perry, William E

Brownson's Chess Journal, 1887

8/3p3K/3p4/3B2N1/4N1k1/6B1/3P2R1/8

#2

7 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Sh3?
      • 1...Kf3
        • 2.Sf6#
      • 1...Kxh3
        • 2.Sf2#
      • 1...Kh5
        • 2.Sf6#
      • 1...Kf5!
    • 1.Be6+?
      • 1...Kh5
        • 2.Rh2#
      • 1...dxe6!
  • Keys
    • 1.Sf7!
      • 1...Kf3
        • 2.Sf6#
      • 1...Kh3
        • 2.Sf2#
      • 1...Kf5
        • 2.Sh6#
      • 1...Kh5
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(F);
      • Vars
        • K(a);S_FLIGHT::B(E)+S(D)
        • K(a);S_FLIGHT,XS(F)::S(D)
        • K(a);S_FLIGHT::S(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(E);CHECK
      • Vars
        • K(a);S_FLIGHT::R(B)
      • Refutation
        • P(c);XB(E)
  • Actual
    • S(F);
    • Vars
      • K(a);S_FLIGHT::B(E)+S(D)
      • K(a);S_FLIGHT::S(D)
      • K(a);S_FLIGHT::S(F)
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