MESON Chess Problem Database

Problem Display
PID: 85817 (8/3N4/8/1B6/1kP5/8/KP6/1R6 w - - 0 1)

Speckmann, Werner

Problem (Zagreb), 1970

8/3N4/8/1B6/1kP5/8/KP6/1R6

#2

6 + 1

3713 Snap 2009
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ka5
      • 2.b4#
  • Tries
    • 1.Ka1?
      • 1...Ka5
        • 2.b4#
      • 1...Kb3!
    • 1.b3?
      • 1...Ka5
        • 2.b4#
      • 1...Kc3!
  • Keys
    • 1.Ra1!
      • 1...Ka5
        • 2.Kb3#

Anticipated by 24368(1924)

FEATURES

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