MESON Chess Problem Database

Problem Display
PID: 144362 (8/5K2/5BR1/2n2k2/5b2/3P3P/2B5/5N2 w - - 0 1)

Grillon, J-M

diagrammes, 1973

8/5K2/5BR1/2n2k2/5b2/3P3P/2B5/5N2

#2

7 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Sb3
      • 2.d4#
    • 1...Sxd3
      • 2.Bxd3#
    • 1...Sa4
      • 2.d4#
    • 1...Se4
      • 2.dxe4#
    • 1...Sa6
      • 2.d4#
    • 1...Se6
      • 2.d4#
    • 1...Sb7
      • 2.d4#
    • 1...Sd7
      • 2.d4#
  • Tries
    • 1.d4+?
      • 1...Sd3
        • 2.Bxd3#
      • 1...Se4!
  • Keys
    • 1.Rg4!
      • 1...Sxd3
        • 2.Bxd3#
      • 1...Bc1
        • 2.Sg3#
      • 1...Bd2
        • 2.Sg3#
      • 1...Bh2
        • 2.Se3#
      • 1...Be3
        • 2.Sxe3#
        • 2.Sg3#
      • 1...Bg3
        • 2.Se3#
        • 2.Sxg3#
      • 1...Be5
        • 2.Se3#
      • 1...Bg5
        • 2.Sg3#
      • 1...Bd6
        • 2.Se3#
      • 1...Bh6
        • 2.Sg3#
      • 1...Bc7
        • 2.Se3#
      • 1...Bb8
        • 2.Se3#
      • 1...Sb3
        • 2.d4#
      • 1...Sa4
        • 2.d4#
      • 1...Se4
        • 2.dxe4#
      • 1...Sa6
        • 2.d4#
      • 1...Se6
        • 2.d4#
      • 1...Sb7
        • 2.d4#
      • 1...Sd7
        • 2.d4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • S(b);N_GUARD::B(B)+P(C)
    • S(b);OGATE,P_SPINS(b),XP(C)::B(B),XS(b)
    • S(b);OGATE::P(C),XS(b)
  • Tries
    • Try
      • P(C);CHECK
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::B(B),XS(b)
      • Refutation
        • S(b);P_SPINS(b)
  • Actual
    • R(F);
    • Vars
      • S(b);OGATE,P_SPINS(b),XP(C)::B(B),XS(b)
      • B(a);N_GUARD::S(A)
      • S(b);N_GUARD::B(B)+P(C)
      • S(b);OGATE::P(C),XS(b)
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