MESON Chess Problem Database

Problem Display
PID: 107850 (8/N1RBk1K1/8/5R2/8/8/8/8 w - - 0 1)

Burque, Francois-Xavier

Orillia Packet, 1889

8/N1RBk1K1/8/5R2/8/8/8/8

#2

5 + 1

3713 Snap 2009
6490 yacpdb 2009
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Tries
    • 1.Bc8+?
      • 1...Kd6
        • 2.Sb5#
      • 1...Ke8
        • 2.Rf8#
      • 1...Kd8!
    • 1.Rfc5?
      • 1...Kd6
        • 2.Sc8#
      • 1...Kd8!
    • 1.Rf7+?
      • 1...Kd8
        • 2.Rc8#
      • 1...Kd6!
  • Keys
    • 1.Rb7!
      • 1...Kd6
        • 2.Sc8#
      • 1...Kd8
        • 2.Sc6#

This anticipates 110213(1989), 171081(1998)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(D);CHECK
      • Vars
        • K(a);S_FLIGHT::S(B)
        • K(a);P-FLIGHT::R1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(A);
      • Vars
        • K(a);S_FLIGHT::S(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(A);CHECK
      • Vars
        • K(a);S_FLIGHT::R1(C)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • R(C);
    • Vars
      • K(a);S_FLIGHT::S(B)
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