MESON Chess Problem Database

Problem Display
PID: 173183 (3k1K2/6N1/1P3P2/3n4/8/7B/3B4/3R4 w - - 0 1)

Stubbs, Charles Francis

Problem Observer, 2006

3k1K2/6N1/1P3P2/3n4/8/7B/3B4/3R4

#2

7 + 2

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sc3
      • 2.Bxc3#
    • 1...Se3
      • 2.Bxe3#
    • 1...Sb4
      • 2.Bxb4#
    • 1...Sf4
      • 2.Bxf4#
    • 1...Sxf6
      • 2.Bg5#
    • 1...Se7
      • 2.fxe7#
  • Tries
    • 1.f7?
      • threat
        • 2.Bg5#
      • 1...Se3
        • 2.Bxe3#
      • 1...Sf4
        • 2.Bxf4#
      • 1...Sxb6!
  • Keys
    • 1.Se8!
      • 1...Sxb6
        • 2.Ba5#
      • 1...Sxf6
        • 2.Bg5#
      • 1...Sc7
        • 2.bxc7#
      • 1...Sc3
        • 2.Bxc3#
      • 1...Se3
        • 2.Bxe3#
      • 1...Sb4
        • 2.Bxb4#
      • 1...Sf4
        • 2.Bxf4#
      • 1...Se7
        • 2.fxe7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(a);OGATEB::R(A)+B(B),XS(a)
    • S(a);OGATEB,XP(E)::R(A)+B(B)
    • S(a);OGATE::P(E),XS(a)
  • Tries
    • Try
      • P(E);
      • Threat
        • B(B)
      • Vars
        • S(a);OGATEB::R(A)+B(B),XS(a)
      • Refutation
        • S(a);XP(D)
  • Actual
    • S(F);
    • Vars
      • S(a);OGATEB,XP(D)::R(A)+B(B)
      • S(a);OGATEB,XP(E)::R(A)+B(B)
      • S(a);OGATE::P(D),XS(a)
      • S(a);OGATEB::R(A)+B(B),XS(a)
      • S(a);OGATE::P(E),XS(a)
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