MESON Chess Problem Database

Problem Display
PID: 23085 (8/8/nK6/8/k4B2/p1Q5/8/n7 w - - 0 1)

Lincoln, Robert A

Fun with Chess Miniatures, 1996

8/8/nK6/8/k4B2/p1Q5/8/n7

#2

3 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Sc5
      • 2.Qc4#
    • 1...Sc7
      • 2.Qc4#
    • 1...Sb8
      • 2.Qc4#
  • Tries
    • 1.Bd2?
      • 1...Sc2
        • 2.Qxc2#
      • 1...Sb3
        • 2.Qc6#
      • 1...Sb4
        • 2.Qxb4#
      • 1...Sc5
        • 2.Qb4#
        • 2.Qc4#
      • 1...Sc7
        • 2.Qb4#
        • 2.Qc4#
      • 1...Sb8
        • 2.Qb4#
        • 2.Qc4#
      • 1...a2!
  • Keys
    • 1.Bd6!
      • threat
        • 2.Qxa3#
      • 1...Sc2
        • 2.Qxc2#
      • 1...Sb3
        • 2.Qc6#
      • 1...Sb4
        • 2.Qxb4#
      • 1...Sc5
        • 2.Qc4#
      • 1...a2
        • 2.Qa3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • S(d);N_GUARD::QAR2(A)
  • Tries
    • Try
      • B(B);
      • Vars
        • S(a);N_GUARD::QAB(A),XS(a)
        • S(a);SBLOCK::QAB(A)
        • S(d);N_GUARD::QAR1(A),XS(d)
      • Refutation
        • P(b);
  • Actual
    • B(B);
    • Threat
      • QAR1(A),XP(b)
    • Vars
      • S(a);N_GUARD::QAB(A),XS(a)
      • S(a);SBLOCK::QAB(A)
      • S(d);N_GUARD::QAR1(A),XS(d)
      • S(d);N_GUARD::QAR2(A)
      • P(b);::QAR1(A)
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