MESON Chess Problem Database

Problem Display
PID: 259579 (5R2/8/8/6N1/8/6p1/3K2BR/6k1 w - - 0 1)

Budai, V

Pravda Vostoka, 1949

(First published on Sat Apr 23 1949)

5R2/8/8/6N1/8/6p1/3K2BR/6k1

#2

5 + 2

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Tries
    • 1.Rg8?
      • 1...Kf2
        • 2.Sh3#
      • 1...gxh2
        • 2.Sh3#
      • 1...Kxh2!
    • 1.Rfh8?
      • 1...Kf2
        • 2.Sh3#
      • 1...gxh2!
  • Keys
    • 1.Rf2!
      • 1...Kxf2
        • 2.Sh3#
      • 1...Kxh2
        • 2.Sf3#
      • 1...gxf2
        • 2.Sf3#
      • 1...gxh2
        • 2.Sh3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(E);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::S(D)
        • P(b);SBLOCK,XR(C)::S(D)
      • Refutation
        • K(a);S_FLIGHT,XR(C)
    • Try
      • R(E);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::S(D)
      • Refutation
        • P(b);XR(C)
  • Actual
    • R(E);
    • Vars
      • K(a);N_GUARD,S_FLIGHT,XR(E)::S(D)
      • K(a);N_GUARD,S_FLIGHT,XR(C)::S(D)
      • P(b);SBLOCK,XR(E)::S(D)
      • P(b);SBLOCK,XR(C)::S(D)
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