MESON Chess Problem Database

Problem Display
PID: 47425 (N7/pp6/k7/p7/8/3K1Q2/8/8 w - - 0 1)

Lincoln, Robert A

Still More Fun with Chess Miniatures, 2002

N7/pp6/k7/p7/8/3K1Q2/8/8

#2

3 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...b5
      • 2.Qc6#
    • 1...b6
      • 2.Sc7#
  • Tries
    • 1.Qg4?
      • 1...Kb5
        • 2.Qc4#
      • 1...a4
        • 2.Qxa4#
      • 1...b5
        • 2.Qc8#
      • 1...b6!
    • 1.Qd5?
      • 1...b5
        • 2.Qc6#
      • 1...b6
        • 2.Sc7#
      • 1...a4!
    • 1.Qc6+?
      • 1...b6
        • 2.Sc7#
      • 1...bxc6!
  • Keys
    • 1.Qe4!
      • 1...Kb5
        • 2.Qc4#
      • 1...a4
        • 2.Qxa4#
      • 1...b5
        • 2.Qc6#
      • 1...b6
        • 2.Sc7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(d);N_GUARD::QAR2(B)
    • P(d);SBLOCK::S(C)
  • Tries
    • Try
      • Q(B);
      • Vars
        • K(b);S_FLIGHT::QAB1(B)
        • P(a);OGATEB::QAR2(B),XP(a)
        • P(d);OGATEB,SBLOCK::QAB(B)
      • Refutation
        • P(d);
    • Try
      • Q(B);
      • Vars
        • P(d);N_GUARD::QAR2(B)
        • P(d);SBLOCK::S(C)
      • Refutation
        • P(a);
    • Try
      • Q(B);CHECK
      • Vars
        • P(d);P_SPINP(d)::S(C)
      • Refutation
        • P(d);XQ(B)
  • Actual
    • Q(B);
    • Vars
      • K(b);S_FLIGHT::QAB1(B)
      • P(a);OGATEB::QAR2(B),XP(a)
      • P(d);N_GUARD::QAR2(B)
      • P(d);SBLOCK::S(C)
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Developed and maintained by Brian Stephenson.
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