MESON Chess Problem Database

Problem Display
PID: 47322 (8/4K1pp/6k1/6N1/7P/5Q2/8/8 w - - 0 1)

Lincoln, Robert A

Still More Fun with Chess Miniatures, 2002

8/4K1pp/6k1/6N1/7P/5Q2/8/8

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...h6
      • 2.Qf7#
  • Tries
    • 1.Sf7?
      • threat
        • 2.Qg4#
        • 2.h5#
      • 1...h5
        • 2.Qe4#
        • 2.Qd3#
      • 1...h6!
    • 1.Qe4+?
      • 1...Kh6
        • 2.Qxh7#
      • 1...Kh5!
    • 1.Qc6+?
      • 1...Kf5
        • 2.Qe4#
      • 1...Kh5!
    • 1.Qd3+?
      • 1...Kh6
        • 2.Qxh7#
      • 1...Kh5!
    • 1.h5+?
      • 1...Kh6
        • 2.Sf7#
      • 1...Kxg5!
  • Keys
    • 1.Qg4!
      • threat
        • 2.Sf7#
      • 1...Kh6
        • 2.Sf7#
      • 1...h5
        • 2.Qe6#
      • 1...h6
        • 2.h5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(c);SBLOCK::QAB1(A)
  • Tries
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Refutation
        • P(c);
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT::QAR1(A),XP(c)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT::QAR1(A),XP(c)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • P(B);CHECK
      • Vars
        • K(a);P-FLIGHT::S(C)
      • Refutation
        • K(a);P-FLIGHT,XS(C)
  • Actual
    • Q(A);
    • Threat
      • QAR(A)+S(C)
    • Vars
      • K(a);P-FLIGHT::S(C)
      • P(c);SBLOCK::QAR2(A)
      • P(c);SBLOCK::P(B)
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