MESON Chess Problem Database

Problem Display
PID: 147097 (8/3K4/1b6/3k4/5Q2/6n1/3PN3/8 w - - 0 1)

Lincoln, Robert A

Australian Chess Problem Magazine TT, 1996

8/3K4/1b6/3k4/5Q2/6n1/3PN3/8

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Bd4
      • 2.Qxd4#
    • 1...Ba5
      • 2.Qd4#
    • 1...Bc5
      • 2.Sc3#
    • 1...Bc7
      • 2.Qd4#
    • 1...Bd8
      • 2.Qd4#
  • Tries
    • 1.Qc4+?
      • 1...Ke5
        • 2.Qe6#
      • 1...Kxc4!
  • Keys
    • 1.d3!
      • threat
        • 2.Qd6#
      • 1...Kc5
        • 2.Qc4#
      • 1...Bc5
        • 2.Sc3#
      • 1...Bc7
        • 2.Qd4#
      • 1...Se4
        • 2.Qf5#
      • 1...Sf5
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • B(c);N_GUARD::QAR1(C),XB(c)
    • B(c);N_GUARD::QAR1(C)
    • B(c);SBLOCK::S(B)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT::QAR1(C)
      • Refutation
        • K(b);S_FLIGHT,XQ(C)
  • Actual
    • P(A);
    • Threat
      • QAR1(C)
    • Vars
      • K(b);P-FLIGHT::QAR1(C)
      • B(c);SBLOCK::S(B)
      • B(c);N_GUARD::QAR1(C)
      • S(a);N_GUARD::QAR2(C)
      • S(a);N_GUARD::QAR2(C),XS(a)
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