MESON Chess Problem Database

Problem Display
PID: 210891 (8/8/7p/5K1k/5p1p/5R2/6P1/8 w - - 0 1)

Smook, Roger W

The Problemist, 1985

8/8/7p/5K1k/5p1p/5R2/6P1/8

#2

3 + 4

3713 Snap 2020

SOLUTION

  • SOUND
  • Sets
    • 1...h3
      • 2.Rxh3#
  • Tries
    • 1.Ra3?
      • 1...h3
        • 2.Rxh3#
      • 1...f3!
    • 1.Rb3?
      • 1...h3
        • 2.Rxh3#
      • 1...f3!
    • 1.Rc3?
      • 1...h3
        • 2.Rxh3#
      • 1...f3!
    • 1.Rd3?
      • 1...h3
        • 2.Rxh3#
      • 1...f3!
  • Keys
    • 1.Rh3!
      • 1...f3
        • 2.g4#

Anticipated by 46627(1926)

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • P(b);OGATEB::R(B),XP(b)
  • Tries
    • Try
      • R(B);
      • Vars
        • P(b);OGATEB::R(B),XP(b)
      • Refutation
        • P(a);
    • Try
      • R(B);
      • Vars
        • P(b);OGATEB::R(B),XP(b)
      • Refutation
        • P(a);
    • Try
      • R(B);
      • Vars
        • P(b);OGATEB::R(B),XP(b)
      • Refutation
        • P(a);
    • Try
      • R(B);
      • Vars
        • P(b);OGATEB::R(B),XP(b)
      • Refutation
        • P(a);
  • Actual
    • R(B);P_PINP(b)
    • Vars
      • P(a);N_GUARD::P(A)
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