MESON Chess Problem Database

Problem Display
PID: 218757 (8/5K1k/7p/8/8/8/8/R7 w - - 0 1)

Russ, Colin Albert Harry

Deutsche Schachzeitung, 1985

8/5K1k/7p/8/8/8/8/R7

#2

2 + 2

15148 Sadier Collection 2020
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Tries
    • 1.Ra5?
      • 1...h5
        • 2.Rxh5#
      • 1...Kh8!
    • 1.Ra6?
      • 1...Kh8
        • 2.Rxh6#
      • 1...h5!
  • Keys
    • 1.Rh1!
      • 1...Kh8
        • 2.Rxh6#
      • 1...h5
        • 2.Rxh5#

This anticipates 153247(2008)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(A);
      • Vars
        • P(a);OGATEB::R(A),XP(a)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • R(A);
      • Vars
        • K(b);P-FLIGHT::R(A),XP(a)
      • Refutation
        • P(a);
  • Actual
    • R(A);P_PINP(a)
    • Vars
      • K(b);P-FLIGHT::R(A),XP(a)
      • P(a);OGATEB::R(A),XP(a)
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