MESON Chess Problem Database

Problem Display
PID: 558 (1N6/8/1p6/k7/7R/1K6/8/8 w - - 0 1)

Ling, John Francis

The Observer, 1964

1N6/8/1p6/k7/7R/1K6/8/8

#2

3 + 2

5454 Near Snap 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Kb5
      • 2.Rh5#
  • Tries
    • 1.Rh1?
      • 1...Kb5
        • 2.Rh5#
      • 1...b5!
    • 1.Rh2?
      • 1...Kb5
        • 2.Rh5#
      • 1...b5!
    • 1.Rh3?
      • 1...Kb5
        • 2.Rh5#
      • 1...b5!
    • 1.Rd4?
      • 1...Kb5
        • 2.Rd5#
      • 1...b5!
    • 1.Re4?
      • 1...Kb5
        • 2.Re5#
      • 1...b5!
    • 1.Rf4?
      • 1...Kb5
        • 2.Rf5#
      • 1...b5!
    • 1.Rg4?
      • 1...Kb5
        • 2.Rg5#
      • 1...b5!
    • 1.Rh7?
      • 1...Kb5
        • 2.Rh5#
      • 1...b5!
    • 1.Rh8?
      • 1...Kb5
        • 2.Rh5#
      • 1...b5!
  • Keys
    • 1.Rh6!
      • 1...Kb5
        • 2.Rh5#
      • 1...b5
        • 2.Ra6#

Anticipated by 80730(1928)

This anticipates 12137(1975)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::R(B)
  • Tries
    • Try
      • R(B);
      • Vars
        • K(a);P-FLIGHT::R(B)
      • Refutation
        • P(b);
    • Try
      • R(B);
      • Vars
        • K(a);P-FLIGHT::R(B)
      • Refutation
        • P(b);
    • Try
      • R(B);
      • Vars
        • K(a);P-FLIGHT::R(B)
      • Refutation
        • P(b);
    • Try
      • R(B);
      • Vars
        • K(a);P-FLIGHT::R(B)
      • Refutation
        • P(b);
    • Try
      • R(B);
      • Vars
        • K(a);P-FLIGHT::R(B)
      • Refutation
        • P(b);
    • Try
      • R(B);
      • Vars
        • K(a);P-FLIGHT::R(B)
      • Refutation
        • P(b);
    • Try
      • R(B);
      • Vars
        • K(a);P-FLIGHT::R(B)
      • Refutation
        • P(b);
    • Try
      • R(B);
      • Vars
        • K(a);P-FLIGHT::R(B)
      • Refutation
        • P(b);
    • Try
      • R(B);
      • Vars
        • K(a);P-FLIGHT::R(B)
      • Refutation
        • P(b);
  • Actual
    • R(B);
    • Vars
      • K(a);P-FLIGHT::R(B)
      • P(b);OGATE,SBLOCK::R1(B)
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