MESON Chess Problem Database

Problem Display
PID: 112808 (7B/3Pk1NR/4B3/1K6/2P5/8/8/6R1 w - - 0 1)

Anstey, Charles Thomas T

St. John Globe, 1905

7B/3Pk1NR/4B3/1K6/2P5/8/8/6R1

#2

8 + 1

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kf8
      • 2.d8Q#
  • Tries
    • 1.Se8+?
      • 1...Kd8
        • 2.Bf6#
      • 1...Kf8
        • 2.Rf1#
        • 2.Rg8#
        • 2.Rf7#
      • 1...Kxe6!
    • 1.Bf5?
      • 1...Kd6
        • 2.Se8#
      • 1...Kf7
        • 2.Se6#
      • 1...Kd8
        • 2.Se6#
      • 1...Kf8
        • 2.Se6#
      • 1...Kf6!
    • 1.Rg5?
      • 1...Kd6
        • 2.d8Q#
      • 1...Kf6
        • 2.d8Q#
        • 2.d8B#
      • 1...Kf8
        • 2.d8Q#
      • 1...Kd8!
    • 1.Rg6?
      • 1...Kd6
        • 2.Se8#
      • 1...Kf8
        • 2.d8Q#
      • 1...Kd8!
    • 1.Rh5?
      • 1...Kd6
        • 2.d8Q#
      • 1...Kf6
        • 2.d8Q#
        • 2.d8B#
      • 1...Kf8
        • 2.d8Q#
      • 1...Kd8!
  • Keys
    • 1.Bh3!
      • 1...Kd6
        • 2.Se8#
      • 1...Kf6
        • 2.Sh5#
        • 2.Se6#
        • 2.Se8#
      • 1...Kf7
        • 2.Se6#
      • 1...Kd8
        • 2.Se6#
      • 1...Kf8
        • 2.Se6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::P=Q
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(a);S_FLIGHT::B(H)
      • Refutation
        • K(a);P-FLIGHT,XB(D)
    • Try
      • B(D);
      • Vars
        • K(a);S_FLIGHT::S(F)
        • K(a);P-FLIGHT::R(G)+S(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(A);
      • Vars
        • K(a);S_FLIGHT::P=Q
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(A);
      • Vars
        • K(a);S_FLIGHT::S(F)
        • K(a);S_FLIGHT::P=Q
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(G);
      • Vars
        • K(a);S_FLIGHT::P=Q
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • B(D);
    • Vars
      • K(a);S_FLIGHT::S(F)
      • K(a);P-FLIGHT::R(G)+S(F)
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