MESON Chess Problem Database

Problem Display
PID: 231027 (8/8/7p/7k/5K2/8/6R1/8 w - - 0 1)

Speckmann, Werner

Deutsche Schachzeitung, 1968

8/8/7p/7k/5K2/8/6R1/8

#2

2 + 2

5454 Near Snap 2021
15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kh4
      • 2.Rh2#
  • Tries
    • 1.Ra2?
      • 1...Kh4
        • 2.Rh2#
      • 1...Kg6!
    • 1.Rb2?
      • 1...Kh4
        • 2.Rh2#
      • 1...Kg6!
    • 1.Rc2?
      • 1...Kh4
        • 2.Rh2#
      • 1...Kg6!
    • 1.Rd2?
      • 1...Kh4
        • 2.Rh2#
      • 1...Kg6!
    • 1.Re2?
      • 1...Kh4
        • 2.Rh2#
      • 1...Kg6!
    • 1.Rf2?
      • 1...Kh4
        • 2.Rh2#
      • 1...Kg6!
    • 1.Rg6?
      • 1...Kh4
        • 2.Rxh6#
      • 1...Kxg6!
  • Keys
    • 1.Rg1!
      • 1...Kh4
        • 2.Rh1#

Anticipated by 149165(1925), 242056(1936)

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::R(A)
  • Tries
    • Try
      • R(A);
      • Vars
        • K(a);P-FLIGHT::R(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(A);
      • Vars
        • K(a);P-FLIGHT::R(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(A);
      • Vars
        • K(a);P-FLIGHT::R(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(A);
      • Vars
        • K(a);P-FLIGHT::R(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(A);
      • Vars
        • K(a);P-FLIGHT::R(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(A);
      • Vars
        • K(a);P-FLIGHT::R(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(A);
      • Vars
        • K(a);P-FLIGHT::R(A),XP(b)
      • Refutation
        • K(a);S_FLIGHT,XR(A)
  • Actual
    • R(A);
    • Vars
      • K(a);P-FLIGHT::R(A)
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