MESON Chess Problem Database

Problem Display
PID: 166010 (k7/1rRK4/8/1RBN4/8/8/8/8 w - - 0 1)

Lincoln, Robert A

StrateGems, 2015

k7/1rRK4/8/1RBN4/8/8/8/8

#2

5 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Ra7
      • 2.Rxa7#
    • 1...Rxc7+
      • 2.Sxc7#
    • 1...Rb8
      • 2.Ra5#
      • 2.Ra7#
  • Keys
    • 1.Kc8!
      • 1...Rxc7+
        • 2.Sxc7#
      • 1...Rb8+
        • 2.Rxb8#
      • 1...Rxb5
        • 2.Ra7#
      • 1...Rb6
        • 2.Sxb6#
      • 1...Ra7
        • 2.Sb6#
        • 2.Rb8#
        • 2.Rxa7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • R(a);::R1(D),XR(a)
    • R(a);CHECK,XR(D)::S(C),XR(a)
  • Actual
    • K(E);N_SPINR(D),S_FLIGHT
    • Vars
      • R(a);CHECK,XR(D)::S(C),XR(a)
      • R(a);CHECK,OGATE::R1(A),XR(a)
      • R(a);OGATE,XR(A)::R1(D)
      • R(a);N_GUARD::S(C),XR(a)
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