MESON Chess Problem Database

Problem Display
PID: 39764 (k7/p1K5/2p5/4n3/1P6/8/2Q5/8 w - - 0 1)

Lincoln, Robert A

More Fun with Chess Miniatures, 2000

k7/p1K5/2p5/4n3/1P6/8/2Q5/8

#2

3 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Sd3
      • 2.Qxc6#
    • 1...Sf3
      • 2.Qxc6#
    • 1...Sg4
      • 2.Qxc6#
    • 1...Sg6
      • 2.Qxc6#
    • 1...Sd7
      • 2.Qxc6#
    • 1...Sf7
      • 2.Qxc6#
  • Tries
    • 1.Qc4?
      • threat
        • 2.Qg8#
      • 1...a5
        • 2.Qa6#
      • 1...a6
        • 2.Qxa6#
      • 1...Sd7
        • 2.Qxc6#
      • 1...Sg6
        • 2.Qxc6#
      • 1...Sf7
        • 2.Qxc6#
      • 1...Sxc4!
    • 1.Qc5?
      • threat
        • 2.Qf8#
      • 1...Sd7
        • 2.Qxc6#
      • 1...Sg6
        • 2.Qxc6#
      • 1...Sf7
        • 2.Qxc6#
      • 1...a5
        • 2.Qxa5#
      • 1...a6!
  • Keys
    • 1.Qa4!
      • 1...a5
        • 2.Qxa5#
      • 1...a6
        • 2.Qxa6#
      • 1...Sd3
        • 2.Qxc6#
      • 1...Sf3
        • 2.Qxc6#
      • 1...Sc4
        • 2.Qxc6#
      • 1...Sg4
        • 2.Qxc6#
      • 1...Sg6
        • 2.Qxc6#
      • 1...Sd7
        • 2.Qxc6#
      • 1...Sf7
        • 2.Qxc6#
      • 1...c5
        • 2.Qe8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::QAB(A),XP(b)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR(A)
      • Vars
        • P(c);OGATEB::QAR2(A)
        • P(c);OGATEB::QAR2(A),XP(c)
        • S(a);N_GUARD::QAB(A),XP(b)
      • Refutation
        • S(a);XQ(A)
    • Try
      • Q(A);
      • Threat
        • QAR(A)
      • Vars
        • S(a);N_GUARD::QAB(A),XP(b)
        • P(c);OGATEB::QAR(A),XP(c)
      • Refutation
        • P(c);
  • Actual
    • Q(A);P_PINP(c)
    • Vars
      • P(c);OGATEB::QAR(A),XP(c)
      • P(c);OGATEB::QAR2(A),XP(c)
      • S(a);N_GUARD::QAB(A),XP(b)
      • P(b);OGATE::QAR(A)
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