MESON Chess Problem Database

Problem Display
PID: 68918 (8/3pK3/8/3pk3/1PPNbp2/6N1/1P6/3Q4 w - - 0 1)

Clark, WA

British Chess Magazine, 1890

8/3pK3/8/3pk3/1PPNbp2/6N1/1P6/3Q4

#2

7 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Bb1
      • 2.Sf3#
    • 1...Bc2
      • 2.Sf3#
    • 1...Bd3
      • 2.Sf3#
    • 1...Bf3
      • 2.Sxf3#
    • 1...Bf5
      • 2.Sf3#
    • 1...Bg6
      • 2.Sf3#
    • 1...Bh7
      • 2.Sf3#
    • 1...d6
      • 2.Sc6#
  • Tries
    • 1.Qh5+?
      • 1...Bf5
        • 2.Sf3#
        • 2.Qh8#
      • 1...Kxd4!
  • Keys
    • 1.Qf3!
      • 1...Kxd4
        • 2.Qc3#
      • 1...Bxf3
        • 2.Sxf3#
      • 1...fxg3
        • 2.Qf6#
      • 1...dxc4
        • 2.Qxe4#
      • 1...Bb1
        • 2.Qxd5#
      • 1...Bc2
        • 2.Qxd5#
      • 1...Bd3
        • 2.Qxd5#
      • 1...Bf5
        • 2.Qxd5#
      • 1...Bg6
        • 2.Qxd5#
      • 1...Bh7
        • 2.Qxd5#
      • 1...d6
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 6
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(a);N_GUARD::S(F)
    • B(a);N_GUARD::S(F),XB(a)
    • P(e);N_GUARD::S(F)
  • Tries
    • Try
      • Q(A);CHECK
      • Refutation
        • K(d);S_FLIGHT,XS(F)
  • Actual
    • Q(A);
    • Vars
      • K(d);OGATEB,S_FLIGHT,XS(F)::QAB1(A)
      • B(a);XQ(A)::S(F),XB(a)
      • P(b);OGATE,XS(C)::QAB1(A)
      • P(c);N_GUARD,XP(E)::QAR1(A),XB(a)
      • B(a);OGATE::QAR1(A),XP(c)
      • P(e);N_GUARD::S(F)
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