MESON Chess Problem Database

Problem Display
PID: 47431 (6K1/5N2/5pkp/8/7p/8/5Q2/8 w - - 0 1)

Lincoln, Robert A

Still More Fun with Chess Miniatures, 2002

6K1/5N2/5pkp/8/7p/8/5Q2/8

#2

3 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Kh5
      • 2.Qf5#
  • Tries
    • 1.Sd6?
      • threat
        • 2.Qf5#
      • 1...Kg5
        • 2.Qf5#
      • 1...Kh5
        • 2.Qf5#
      • 1...f5
        • 2.Qxf5#
      • 1...h5!
    • 1.Sh8+?
      • 1...Kh5
        • 2.Qf5#
      • 1...Kg5!
    • 1.Qc2+?
      • 1...Kh5
        • 2.Qf5#
      • 1...f5!
    • 1.Qxf6+?
      • 1...Kh5
        • 2.Qf5#
      • 1...Kxf6!
  • Keys
    • 1.Qf4!
      • threat
        • 2.Qg4#
      • 1...Kh5
        • 2.Qf5#
      • 1...f5
        • 2.Qxh6#
      • 1...h5
        • 2.Sh8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::QAR2(A)
  • Tries
    • Try
      • S(B);
      • Threat
        • QAB1(A)
      • Vars
        • K(c);P-FLIGHT::QAR1(A)
        • K(c);S_FLIGHT::QAR2(A)
        • P(b);::QAB1(A),XP(b)
      • Refutation
        • P(d);
    • Try
      • S(B);CHECK
      • Vars
        • K(c);S_FLIGHT::QAR2(A)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);S_FLIGHT::QAR2(A)
      • Refutation
        • P(b);P_SPINP(b)
    • Try
      • Q(A);CHECK,XP(b)
      • Vars
        • K(c);S_FLIGHT::QAR2(A)
      • Refutation
        • K(c);P-FLIGHT,XQ(A)
  • Actual
    • Q(A);
    • Threat
      • QAR2(A)
    • Vars
      • K(c);S_FLIGHT::QAR2(A)
      • P(b);SBLOCK::QAR1(A),XP(d)
      • P(d);SBLOCK::S(B)
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