MESON Chess Problem Database

Problem Display
PID: 23130 (8/1Kn5/6B1/pkb5/8/2Q5/8/8 w - - 0 1)

Lincoln, Robert A

Fun with Chess Miniatures, 1996

8/1Kn5/6B1/pkb5/8/2Q5/8/8

#2

3 + 4

145 StrateGems 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Bb4
      • 2.Qc6#
    • 1...Sd5
      • 2.Be8#
    • 1...Sa6
      • 2.Be8#
    • 1...Se6
      • 2.Be8#
    • 1...Sa8
      • 2.Be8#
    • 1...Se8
      • 2.Bxe8#
    • 1...a4
      • 2.Bd3#
  • Tries
    • 1.Qxc5+?
      • 1...Ka4
        • 2.Bc2#
      • 1...Kxc5!
  • Keys
    • 1.Bf7!
      • threat
        • 2.Qc4#
      • 1...Ka4
        • 2.Qb3#
      • 1...Bb4
        • 2.Qc6#
      • 1...Sd5
        • 2.Be8#
      • 1...Se6
        • 2.Be8#
      • 1...a4
        • 2.Bc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • B(c);OGATE,SBLOCK::QAB1(A)
    • S(d);N_GUARD::B(B)
    • S(d);N_GUARD::B(B),XS(d)
    • P(a);SBLOCK::B(B)
  • Tries
    • Try
      • Q(A);CHECK,XB(c)
      • Vars
        • K(b);S_FLIGHT::B(B)
      • Refutation
        • K(b);P-FLIGHT,XQ(A)
  • Actual
    • B(B);
    • Threat
      • QAB1(A)
    • Vars
      • K(b);S_FLIGHT::QAB1(A)
      • B(c);OGATE,SBLOCK::QAB1(A)
      • S(d);N_GUARD::B(B)
      • P(a);SBLOCK::B(B)
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