MESON Chess Problem Database

Problem Display
PID: 87591 (2R5/3k1n2/2R2K2/8/8/8/7n/3B4 w - - 0 1)

Kormiltsev, Mikhail Konstantinovich

Problemist Pribuzhya, 1991

2R5/3k1n2/2R2K2/8/8/8/7n/3B4

#2

4 + 3

6490 yacpdb 2009
5454 Near Snap 2010

SOLUTION

  • SOUND
  • Sets
    • 1...Sf1
      • 2.Bg4#
    • 1...Sg4+
      • 2.Bxg4#
    • 1...Sd6
      • 2.R6c7#
  • Tries
    • 1.Kxf7?
      • 1...Sf1
        • 2.Bg4#
      • 1...Sg4
        • 2.Bxg4#
      • 1...Sf3!
  • Keys
    • 1.Bh5!
      • 1...Sg4+
        • 2.Bxg4#
      • 1...Sf3
        • 2.Bg4#
      • 1...Sf1
        • 2.Bg4#
      • 1...Se5
        • 2.Be8#
      • 1...Sg5
        • 2.Be8#
      • 1...Sd6
        • 2.R6c7#
      • 1...Sh6
        • 2.Be8#
      • 1...Sd8
        • 2.R8c7#
      • 1...Sh8
        • 2.Be8#

Anticipated by 227469(1926)

This anticipates 77493(1992)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::B(A)
    • S(a);CHECK,N_GUARD::B(A),XS(a)
    • S(c);SBLOCK::R1(B)
  • Tries
    • Try
      • K(C);P-FLIGHT,XS(c)
      • Vars
        • S(a);N_GUARD::B(A)
        • S(a);N_GUARD::B(A),XS(a)
      • Refutation
        • S(a);
  • Actual
    • B(A);
    • Vars
      • S(a);CHECK,N_GUARD::B(A),XS(a)
      • S(a);N_GUARD::B(A)
      • S(c);OGATE::B(A)
      • S(c);SBLOCK::R1(B)
      • S(c);SBLOCK::R1(D)
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