MESON Chess Problem Database

Problem Display
PID: 15735 (2K1kq2/5N2/5Q2/2pP4/8/8/8/8 w - - 0 1)

Lincoln, Robert A

Newark Star-Ledger, 1987

2K1kq2/5N2/5Q2/2pP4/8/8/8/8

#2

4 + 3

2838 Fun with Chess Miniatures 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Qd6
      • 2.Sxd6#
    • 1...Qh6
      • 2.Sd6#
    • 1...Qg7
      • 2.Sd6#
    • 1...Qxf7
      • 2.Qd8#
    • 1...Qg8
      • 2.Sd6#
    • 1...Qh8
      • 2.Sd6#
  • Keys
    • 1.d6!
      • threat
        • 2.d7#
      • 1...Qxd6
        • 2.Sxd6#
      • 1...Qxf7
        • 2.Qd8#
      • 1...Qh6
        • 2.Qe7#
      • 1...Qe7
        • 2.Qxe7#
      • 1...Qg7
        • 2.Qe7#
      • 1...Qg8
        • 2.Qe7#
      • 1...Qh8
        • 2.Qe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 4
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • Q(c);N_GUARD::S(C),XQ(c)
    • Q(c);N_GUARD::S(C)
    • Q(c);SBLOCK,XS(C)::QAR1(B)
  • Actual
    • P(A);
    • Threat
      • P(A)
    • Vars
      • Q(c);XP(A)::S(C),XQ(c)
      • Q(c);SBLOCK,XS(C)::QAR1(B)
      • Q(c);N_GUARD::QAR1(B)
      • Q(c);N_GUARD::QAR1(B),XQ(c)
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