MESON Chess Problem Database

Problem Display
PID: 23868 (k7/2P5/Kpr5/1R1N4/8/8/8/8 w - - 0 1)

Lincoln, Robert A

Fun with Chess Miniatures, 1996

k7/2P5/Kpr5/1R1N4/8/8/8/8

#2

4 + 3

136 Problem Observer 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Rc1
      • 2.Sxb6#
    • 1...Rc2
      • 2.Sxb6#
    • 1...Rc3
      • 2.Sxb6#
    • 1...Rc4
      • 2.Sxb6#
    • 1...Rc5
      • 2.Sxb6#
    • 1...Rd6
      • 2.c8Q#
      • 2.c8R#
    • 1...Re6
      • 2.c8Q#
      • 2.c8R#
    • 1...Rf6
      • 2.c8Q#
      • 2.c8R#
    • 1...Rg6
      • 2.c8Q#
      • 2.c8R#
    • 1...Rh6
      • 2.c8Q#
      • 2.c8R#
  • Keys
    • 1.Rxb6!
      • 1...Rxb6+
        • 2.Sxb6#
      • 1...Rxc7
        • 2.Sxc7#
      • 1...Rc1
        • 2.Rb8#
      • 1...Rc2
        • 2.Rb8#
      • 1...Rc3
        • 2.Rb8#
      • 1...Rc4
        • 2.Rb8#
      • 1...Rc5
        • 2.Rb8#
      • 1...Rd6
        • 2.c8Q#
        • 2.c8R#
      • 1...Re6
        • 2.c8Q#
        • 2.c8R#
      • 1...Rf6
        • 2.c8Q#
        • 2.c8R#
      • 1...Rg6
        • 2.c8Q#
        • 2.c8R#
      • 1...Rh6
        • 2.c8Q#
        • 2.c8R#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 5
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(b);N_GUARD::S(B),XP(a)
    • R(b);N_GUARD::P=Q
    • R(b);N_GUARD,SBLOCK::P=Q
  • Actual
    • R(A);P_SPINR(A),XP(a)
    • Vars
      • R(b);CHECK,XR(A)::S(B),XR(b)
      • R(b);N_PINR(A),XP(D)::S(B),XR(b)
      • R(b);N_PINR(A)::R1(A)
      • R(b);N_GUARD::P=Q
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