MESON Chess Problem Database

Problem Display
PID: 44562 (5K1k/4pp1p/3B4/6P1/6Q1/8/8/8 w - - 0 1)

Shinkman, William Anthony

Dubuque Chess Journal, 1870

5K1k/4pp1p/3B4/6P1/6Q1/8/8/8

#2

4 + 4

16 Chess Amateur (The) 1907

SOLUTION

  • SOUND
  • Sets
    • 1...f5
      • 2.Be5#
    • 1...h5
      • 2.Qxh5#
  • Tries
    • 1.Kxf7?
      • threat
        • 2.Be5#
        • 2.Qc8#
      • 1...exd6
        • 2.Qc8#
        • 2.Qd4#
      • 1...h5
        • 2.Qxh5#
      • 1...e5
        • 2.Bxe5#
        • 2.Qc8#
      • 1...e6
        • 2.Be5#
      • 1...h6!
    • 1.Bxe7?
      • threat
        • 2.Bf6#
      • 1...h5
        • 2.Qxh5#
      • 1...f6
        • 2.Bxf6#
      • 1...h6!
    • 1.g6?
      • threat
        • 2.g7#
      • 1...fxg6
        • 2.Be5#
      • 1...hxg6
        • 2.Qh3#
        • 2.Qh4#
      • 1...h5
        • 2.Qxh5#
      • 1...h6!
  • Keys
    • 1.Qe6!
      • 1...exd6
        • 2.Qf6#
      • 1...fxe6
        • 2.Be5#
      • 1...h5
        • 2.Qh6#
      • 1...h6
        • 2.Qxh6#
      • 1...f5
        • 2.Be5#
        • 2.Qg8#
        • 2.Qe5#
      • 1...f6
        • 2.Qg8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • P(b);N_GUARD::B(C)
    • P(c);OGATEB::QAR(A),XP(c)
  • Tries
    • Try
      • K(D);P-FLIGHT,XP(b)
      • Threat
        • DUALS(2)
      • Vars
        • P(c);OGATEB::QAR(A),XP(c)
        • P(a);::B(C)
      • Refutation
        • P(c);
    • Try
      • B(C);XP(a)
      • Threat
        • B(C)
      • Vars
        • P(c);OGATEB::QAR(A),XP(c)
        • P(b);::B(C),XP(b)
      • Refutation
        • P(c);
    • Try
      • P(B);
      • Threat
        • P(B)
      • Vars
        • P(b);N_GUARD,XP(B)::B(C)
        • P(c);OGATEB::QAR(A),XP(c)
      • Refutation
        • P(c);
  • Actual
    • Q(A);
    • Vars
      • P(a);N_GUARD,XB(C)::QAB(A)
      • P(b);N_GUARD,XQ(A)::B(C)
      • P(c);OGATEB::QAR2(A)
      • P(c);OGATEB::QAR2(A),XP(c)
      • P(b);OGATE::QAR1(A)
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