MESON Chess Problem Database

Problem Display
PID: 144647 (8/8/8/K7/2N4Q/Nk3P1p/p7/8 w - - 0 1)

Lincoln, Robert A

The Problemist Supplement, 2011

8/8/8/K7/2N4Q/Nk3P1p/p7/8

#2

5 + 3

5454 Near Snap 2015

SOLUTION

  • SOUND
  • Tries
    • 1.Qe4?
      • threat
        • 2.Qc2#
        • 2.Qd3#
        • 2.Qe3#
      • 1...Kc3
        • 2.Qe3#
      • 1...a1Q
        • 2.Qc2#
      • 1...a1B
        • 2.Qc2#
      • 1...a1R
        • 2.Qc2#
      • 1...a1S!
  • Keys
    • 1.Qf2!
      • threat
        • 2.Qe3#
        • 2.Qb2#
        • 2.Qc2#
      • 1...Kc3
        • 2.Qe3#
      • 1...a1Q
        • 2.Qc2#
      • 1...a1S
        • 2.Qb2#
      • 1...a1B
        • 2.Qc2#
      • 1...a1R
        • 2.Qb2#
        • 2.Qc2#

Anticipated by 80026(1983)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(D);
      • Threat
        • DUALS(3)
      • Vars
        • K(b);P-FLIGHT::QAR2(D)
        • P(a);P_PINS(A)::QAB1(D)
        • P(a);::QAB1(D)
      • Refutation
        • P(a);
  • Actual
    • Q(D);
    • Threat
      • DUALS(3)
    • Vars
      • K(b);P-FLIGHT::QAR2(D)
      • P(a);P_PINS(A)::QAB1(D)
      • P(a);::QAR1(D)
      • P(a);::QAB1(D)
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