MESON Chess Problem Database

Problem Display
PID: 23089 (2K1k3/5p2/4n3/8/8/B1n5/8/4Q3 w - - 0 1)

Lincoln, Robert A

Fun with Chess Miniatures, 1996

2K1k3/5p2/4n3/8/8/B1n5/8/4Q3

#2

3 + 4

145 StrateGems 2008

SOLUTION

  • SOUND
  • Sets
    • 1...f5
      • 2.Qxe6#
    • 1...f6
      • 2.Qxe6#
  • Tries
    • 1.Qe2?
      • 1...f5
        • 2.Qh5#
        • 2.Qxe6#
      • 1...f6
        • 2.Qh5#
        • 2.Qxe6#
      • 1...Sb1
        • 2.Qb5#
      • 1...Sd1
        • 2.Qb5#
      • 1...Sa2
        • 2.Qb5#
      • 1...Sa4
        • 2.Qb5#
      • 1...Se4
        • 2.Qb5#
      • 1...Sb5
        • 2.Qxb5#
      • 1...Sd5
        • 2.Qb5#
      • 1...Sxe2!
    • 1.Qe4?
      • threat
        • 2.Qc6#
      • 1...f5
        • 2.Qxe6#
      • 1...f6
        • 2.Qg6#
        • 2.Qxe6#
      • 1...Sd5
        • 2.Qa4#
      • 1...Sxe4!
    • 1.Qe5?
      • 1...f5
        • 2.Qxe6#
      • 1...f6
        • 2.Qh5#
        • 2.Qxe6#
      • 1...Sb1
        • 2.Qb5#
      • 1...Sd1
        • 2.Qb5#
      • 1...Sa2
        • 2.Qb5#
      • 1...Se2
        • 2.Qb5#
      • 1...Sa4
        • 2.Qb5#
      • 1...Se4
        • 2.Qb5#
      • 1...Sb5
        • 2.Qxb5#
      • 1...Sd5!
  • Keys
    • 1.Qh4!
      • threat
        • 2.Qe7#
      • 1...Sc5
        • 2.Qd8#
      • 1...f6
        • 2.Qh5#
      • 1...Sd5
        • 2.Qa4#
      • 1...Sg5
        • 2.Qh8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • P(c);N_GUARD::QAR2(A),XS(b)
  • Tries
    • Try
      • Q(A);
      • Vars
        • S(a);N_GUARD::QAB(A)
        • S(a);N_GUARD,N_SPINS(b)::QAB(A)
        • S(a);N_GUARD::QAB(A),XS(a)
      • Refutation
        • S(a);N_SPINS(b),XQ(A)
    • Try
      • Q(A);
      • Threat
        • QAB(A)
      • Vars
        • P(c);N_GUARD::QAR2(A),XS(b)
        • S(a);N_GUARD::QAB(A)
      • Refutation
        • S(a);N_SPINS(b),XQ(A)
    • Try
      • Q(A);
      • Vars
        • P(c);N_GUARD::QAR2(A),XS(b)
        • S(a);N_GUARD::QAB(A)
        • S(a);N_GUARD::QAB(A),XS(a)
      • Refutation
        • S(a);
  • Actual
    • Q(A);N_PINS(b)
    • Threat
      • QAR1(A)
    • Vars
      • S(b);N_GUARD::QAR1(A)
      • P(c);OGATEB::QAB(A)
      • S(a);N_GUARD::QAB(A)
      • S(b);N_GUARD::QAR(A)
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