MESON Chess Problem Database

Problem Display
PID: 138825 (7B/6n1/R3p3/3k4/6Q1/8/2K5/8 w - - 0 1)

Lincoln, Robert A

4th Comm., Seven Chess Notes, 2010

7B/6n1/R3p3/3k4/6Q1/8/2K5/8

#2

4 + 3

145 StrateGems 2010
145 StrateGems 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Sh5
      • 2.Qd4#
    • 1...Se8
      • 2.Qd4#
  • Tries
    • 1.Kb3?
      • 1...Kc5
        • 2.Qc4#
      • 1...Sf5
        • 2.Qc4#
      • 1...Sh5
        • 2.Qc4#
        • 2.Qd4#
      • 1...Se8
        • 2.Qc4#
        • 2.Qd4#
      • 1...e5
        • 2.Qc4#
      • 1...Ke5!
    • 1.Kc3?
      • threat
        • 2.Qd4#
      • 1...Kc5
        • 2.Qc4#
      • 1...Sf5
        • 2.Qc4#
      • 1...e5
        • 2.Qc4#
      • 1...Ke5!
  • Keys
    • 1.Kd3!
      • threat
        • 2.Qd4#
      • 1...Kc5
        • 2.Qc4#
      • 1...Ke5
        • 2.Qg5#
      • 1...Sf5
        • 2.Qc4#
      • 1...e5
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • S(c);::QAR1(B)
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
        • S(c);::QAB1(B)
        • P(b);SBLOCK::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT,P_SPINS(c)
    • Try
      • K(A);P-FLIGHT
      • Threat
        • QAR1(B)
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
        • S(c);::QAB1(B)
        • P(b);SBLOCK::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT,P_SPINS(c)
  • Actual
    • K(A);S_FLIGHT
    • Threat
      • QAR1(B)
    • Vars
      • K(a);P-FLIGHT::QAR1(B)
      • K(a);P-FLIGHT,P_SPINS(c)::QAR2(B)
      • S(c);::QAB1(B)
      • P(b);SBLOCK::QAB1(B)
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Developed and maintained by Brian Stephenson.
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