MESON Chess Problem Database

Problem Display
PID: 183760 (8/5Q2/8/4p3/5N2/8/3K1p2/5k2 w - - 0 1)

Lincoln, Robert A

1st Prize, Problemist Ukraini TT, 2014

8/5Q2/8/4p3/5N2/8/3K1p2/5k2

#2

3 + 3

5454 Near Snap 2018
56 The Problemist 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Qd5?
      • threat
        • 2.Qh1#
        • 2.Qg2#
      • 1...Kg1
        • 2.Qg2#
      • 1...exf4
        • 2.Qh1#
      • 1...e4!
    • 1.Qh5?
      • threat
        • 2.Qd1#
        • 2.Qh1#
      • 1...exf4
        • 2.Qh1#
      • 1...Kg1!
    • 1.Qg6?
      • threat
        • 2.Qb1#
        • 2.Qg2#
      • 1...e4
        • 2.Qg2#
      • 1...exf4!
    • 1.Qh7?
      • threat
        • 2.Qb1#
        • 2.Qh1#
      • 1...exf4
        • 2.Qh1#
      • 1...e4
        • 2.Qh1#
      • 1...Kg1!
  • Keys
    • 1.Qb7!
      • threat
        • 2.Qh1#
        • 2.Qg2#
        • 2.Qb1#
      • 1...Kg1
        • 2.Qg2#
      • 1...exf4
        • 2.Qh1#
      • 1...e4
        • 2.Qb1#

Anticipated by 80840(1992)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);P-FLIGHT::QAR1(C)
        • P(c);XS(B)::QAR2(C)
      • Refutation
        • P(c);
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);XS(B)::QAR2(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);::QAB1(C)
      • Refutation
        • P(c);XS(B)
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);XS(B)::QAR2(C)
        • P(c);::QAR2(C)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(C);
    • Threat
      • DUALS(3)
    • Vars
      • K(a);P-FLIGHT::QAR1(C)
      • P(c);XS(B)::QAR2(C)
      • P(c);::QAR(C)
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