MESON Chess Problem Database

Problem Display
PID: 23616 (8/4p3/R5R1/3P1k1P/8/4K3/8/8 w - - 0 1)

Ulkmar, M

Delo in Tovaris, 1968

8/4p3/R5R1/3P1k1P/8/4K3/8/8

#2

5 + 2

3295 Einfuhrung in die Welt des Schachproblem 1984
136 Problem Observer 2008

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Rg5#
    • 1...e5
      • 2.Raf6#
  • Tries
    • 1.Rab6?
      • 1...Ke5
        • 2.Rg5#
      • 1...e5
        • 2.Rbf6#
      • 1...e6!
    • 1.Rac6?
      • 1...Ke5
        • 2.Rg5#
      • 1...e5
        • 2.Rcf6#
      • 1...e6!
    • 1.h6?
      • 1...Ke5
        • 2.Rg5#
      • 1...e5
        • 2.Raf6#
      • 1...e6!
  • Keys
    • 1.Ra5!
      • 1...Ke5
        • 2.d6#
      • 1...e6
        • 2.dxe6#
      • 1...e5
        • 2.dxe5 ep#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::R(E)
    • P(b);N_GUARD,SBLOCK::R1(D)
  • Tries
    • Try
      • R(D);
      • Vars
        • K(a);P-FLIGHT::R(E)
        • P(b);N_GUARD,SBLOCK::R1(D)
      • Refutation
        • P(b);
    • Try
      • R(D);
      • Vars
        • K(a);P-FLIGHT::R(E)
        • P(b);N_GUARD,SBLOCK::R1(D)
      • Refutation
        • P(b);
    • Try
      • P(C);
      • Vars
        • K(a);P-FLIGHT::R(E)
        • P(b);N_GUARD,SBLOCK::R1(D)
      • Refutation
        • P(b);
  • Actual
    • R(D);
    • Vars
      • K(a);P-FLIGHT::R(D)+P(B)
      • P(b);OGATE::R(D)+P(B),XP(b)
      • P(b);OGATE::R(D)+P(B),XP(b),EP
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