MESON Chess Problem Database

Problem Display
PID: 23134 (b7/6K1/8/2Q5/4k1n1/6B1/4P3/8 w - - 0 1)

Lincoln, Robert A

Fun with Chess Miniatures, 1996

b7/6K1/8/2Q5/4k1n1/6B1/4P3/8

#2

4 + 3

5454 Near Snap 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Sf2
      • 2.Qe5#
    • 1...Sh2
      • 2.Qe5#
    • 1...Se3
      • 2.Qe5#
    • 1...Se5
      • 2.Qxe5#
    • 1...Sf6
      • 2.Qe5#
    • 1...Sh6
      • 2.Qe5#
  • Tries
    • 1.Qc4+?
      • 1...Ke3
        • 2.Qd3#
      • 1...Kf5!
    • 1.Qb5?
      • threat
        • 2.Qd3#
      • 1...Ke3
        • 2.Qd3#
      • 1...Se5
        • 2.Qxe5#
      • 1...Sf2
        • 2.Qe5#
      • 1...Kd4!
  • Keys
    • 1.Qd6!
      • threat
        • 2.Qd3#
      • 1...Ke3
        • 2.Qd3#
      • 1...Kf5
        • 2.Qg6#
      • 1...Bd5
        • 2.Qf4#
      • 1...Sf2
        • 2.Qe5#
      • 1...Se5
        • 2.Qxe5#

This anticipates 45962(2002)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • S(b);N_GUARD::QAR1(C)
    • S(b);N_GUARD,SBLOCK::QAR1(C)
    • S(b);N_GUARD::QAR1(C),XS(b)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);
      • Threat
        • QAB1(C)
      • Vars
        • K(a);P-FLIGHT::QAR1(C)
        • S(b);N_GUARD::QAR1(C),XS(b)
        • S(b);N_GUARD::QAR1(C)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(C);
    • Threat
      • QAB1(C)
    • Vars
      • K(a);P-FLIGHT::QAR1(C)
      • K(a);S_FLIGHT::QAB1(C)
      • B(c);SBLOCK::QAR1(C)
      • S(b);N_GUARD::QAR1(C)
      • S(b);N_GUARD::QAR1(C),XS(b)
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