MESON Chess Problem Database

Problem Display
PID: 240301 (5Q2/3p4/5B2/7K/7N/7k/7n/6R1 w - - 0 1)

Lincoln, Robert A

Problem-Forum, 2016

5Q2/3p4/5B2/7K/7N/7k/7n/6R1

#2

5 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Qd6?
      • threat
        • 2.Rg3#
        • 2.Qg3#
      • 1...Sf3
        • 2.Qg3#
      • 1...Sg4
        • 2.Qg3#
      • 1...Sf1!
    • 1.Qg7?
      • threat
        • 2.Rg3#
        • 2.Qg2#
        • 2.Qg3#
      • 1...Sf1
        • 2.Qg2#
      • 1...Sf3
        • 2.Qg2#
        • 2.Qg3#
      • 1...Sg4!
    • 1.Qg8?
      • threat
        • 2.Rg3#
        • 2.Qg2#
        • 2.Qg3#
      • 1...Sf1
        • 2.Qg2#
      • 1...Sf3
        • 2.Qg2#
        • 2.Qg3#
      • 1...Sg4!
  • Keys
    • 1.Be5!
      • threat
        • 2.Rg3#
      • 1...Sf1
        • 2.Qxf1#
        • 2.Qf5#
      • 1...Sf3
        • 2.Qxf3#
        • 2.Qf5#
      • 1...Sg4
        • 2.Qf1#
        • 2.Qf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(E);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);::QAR1(E)
      • Refutation
        • S(a);
    • Try
      • Q(E);
      • Threat
        • DUALS(3)
      • Vars
        • S(a);::QAB1(E)
      • Refutation
        • S(a);
    • Try
      • Q(E);
      • Threat
        • DUALS(3)
      • Vars
        • S(a);::QAB1(E)
      • Refutation
        • S(a);
  • Actual
    • B(D);
    • Threat
      • R1(A)
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