MESON Chess Problem Database

Problem Display
PID: 79275 (7k/5p2/8/7K/8/8/B1n5/6RR w - - 0 1)

Morse, Christopher Jeremy

The Tablet, 1963

(First published on Sat Sep 21 1963)

7k/5p2/8/7K/8/8/B1n5/6RR

#2

4 + 3

5454 Near Snap 2009

SOLUTION

  • SOUND
  • Sets
    • 1...f5
      • 2.Kg6#
    • 1...f6
      • 2.Kg6#
  • Tries
    • 1.Rg5?
      • threat
        • 2.Kg4#
      • 1...Kh7
        • 2.Kg4#
      • 1...f5
        • 2.Kg6#
      • 1...Se3!
  • Keys
    • 1.Rg6!
      • threat
        • 2.Kg4#
        • 2.Kg5#
      • 1...fxg6+
        • 2.Kxg6#
      • 1...Kh7
        • 2.Kg5#
      • 1...Se3
        • 2.Kg5#
      • 1...f5
        • 2.Kg5#
      • 1...f6
        • 2.Kg4#

Anticipated by 6702(1932)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(b);::R(B)+K(D)
  • Tries
    • Try
      • R(A);
      • Threat
        • R(B)+K(D)
      • Vars
        • K(c);P-FLIGHT::R(B)+K(D)
        • P(b);::R(B)+K(D)
      • Refutation
        • S(a);
  • Actual
    • R(A);
    • Threat
      • DUALS(2)
    • Vars
      • P(b);CHECK,XR(A)::R(B)+K(D),XP(b)
      • K(c);P-FLIGHT::R(B)+K(D)
      • S(a);::R(B)+K(D)
      • P(b);::R(B)+K(D)
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