MESON Chess Problem Database

Problem Display
PID: 187623 (6QK/8/7R/8/5k2/8/7R/8 w - - 0 1)

White, Alain Campbell

Memories of my Chessboard, 1909

6QK/8/7R/8/5k2/8/7R/8

#2

4 + 1

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Tries
    • 1.Re6?
      • threat
        • 2.Rf2#
      • 1...Kf5
        • 2.Rf2#
      • 1...Kf3!
    • 1.Qg4+?
      • 1...Ke3
        • 2.R6h3#
      • 1...Ke5
        • 2.R2h5#
      • 1...Kxg4!
  • Keys
    • 1.Qc4+!
      • 1...Ke3
        • 2.R6h3#
      • 1...Kf3
        • 2.R6h3#
      • 1...Kg3
        • 2.R6h3#
      • 1...Ke5
        • 2.R2h5#
      • 1...Kf5
        • 2.R2h5#
      • 1...Kg5
        • 2.R2h5#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);
      • Threat
        • R(A)
      • Vars
        • K(a);P-FLIGHT::R(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);S_FLIGHT::R(B)
        • K(a);S_FLIGHT::R(A)
      • Refutation
        • K(a);P-FLIGHT,XQ(C)
  • Actual
    • Q(C);CHECK
    • Vars
      • K(a);S_FLIGHT::R(B)
      • K(a);P-FLIGHT::R(B)
      • K(a);S_FLIGHT::R1(B)
      • K(a);S_FLIGHT::R(A)
      • K(a);P-FLIGHT::R(A)
      • K(a);S_FLIGHT::R1(A)
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