MESON Chess Problem Database

Problem Display
PID: 247337 (2Q5/8/8/5N1b/6n1/5P1k/8/6K1 w - - 0 1)

Lincoln, Robert A

Uralski Problemist, 2006

2Q5/8/8/5N1b/6n1/5P1k/8/6K1

#2

4 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Qc2?
      • threat
        • 2.Qg2#
      • 1...Se3
        • 2.Qh2#
      • 1...Sf2!
    • 1.Qg8?
      • 1...Bf7
        • 2.Qxg4#
      • 1...Be8
        • 2.Qxg4#
      • 1...Sf2
        • 2.Qg2#
        • 2.Qg3#
      • 1...Sh2
        • 2.Qg2#
        • 2.Qg3#
      • 1...Se3
        • 2.Qg3#
      • 1...Se5
        • 2.Qg2#
        • 2.Qg3#
      • 1...Sf6
        • 2.Qg2#
        • 2.Qg3#
      • 1...Sh6
        • 2.Qg2#
        • 2.Qg3#
      • 1...Bg6!
  • Keys
    • 1.Qc4!
      • threat
        • 2.Qf1#
      • 1...Sh2
        • 2.Qh4#
      • 1...Se3
        • 2.Qh4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(D);
      • Threat
        • QAB1(D)
      • Vars
        • S(b);N_GUARD::QAR1(D)
      • Refutation
        • S(b);
    • Try
      • Q(D);
      • Vars
        • B(c);N_GUARD::QAB1(D),XS(b)
        • S(b);OGATE::QAR1(D)
      • Refutation
        • B(c);
  • Actual
    • Q(D);
    • Threat
      • QAB(D)
    • Vars
      • S(b);OGATE::QAR1(D)
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