MESON Chess Problem Database

Problem Display
PID: 18230 (8/8/4NRn1/6Pk/8/6K1/8/8 w - - 0 1)

Pustovoi, Boris

Molodoy stalin CC, 1954

8/8/4NRn1/6Pk/8/6K1/8/8

#2

4 + 2

3296 Shakhmatny zadachi miniaturi 1987
3813 300 Sachmatu Uzdaviniu 1991
5454 Near Snap 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sf4
      • 2.Rh6#
    • 1...Sh4
      • 2.Rh6#
    • 1...Se5
      • 2.Rh6#
    • 1...Se7
      • 2.Rh6#
    • 1...Sf8
      • 2.Rh6#
    • 1...Sh8
      • 2.Rh6#
  • Tries
    • 1.Kh3?
      • 1...Sh4
        • 2.Rh6#
      • 1...Se5
        • 2.Rh6#
      • 1...Se7
        • 2.Rh6#
      • 1...Sf8
        • 2.Rh6#
      • 1...Sh8
        • 2.Rh6#
      • 1...Sf4+!
  • Keys
    • 1.Rf5!
      • threat
        • 2.Sg7#
      • 1...Sf4
        • 2.Sxf4#
      • 1...Sh4
        • 2.Sf4#
      • 1...Se5
        • 2.Sf4#
      • 1...Se7
        • 2.Sf4#
      • 1...Sf8
        • 2.Sf4#
      • 1...Sh8
        • 2.Sf4#

Anticipated by 79839(1927), 81274(1951)

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 6
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(b);OGATE::R1(D)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • S(b);OGATE::R1(D)
      • Refutation
        • S(b);CHECK
  • Actual
    • R(D);
    • Threat
      • S(C)
    • Vars
      • S(b);N_GUARD::S(C),XS(b)
      • S(b);N_GUARD::S(C)
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