MESON Chess Problem Database

Problem Display
PID: 186058 (kn2K3/6NQ/P1N5/8/8/8/8/8 w - - 0 1)

Lincoln, Robert A

Problem Observer, 2017

kn2K3/6NQ/P1N5/8/8/8/8/8

#2

5 + 2

SOLUTION

  • SOUND
  • Tries
    • 1.Sf5?
      • threat
        • 2.Qa7#
        • 2.Qb7#
      • 1...Sxa6
        • 2.Qa7#
      • 1...Sxc6
        • 2.Qb7#
      • 1...Sd7!
    • 1.Sh5?
      • threat
        • 2.Qa7#
        • 2.Qb7#
      • 1...Sxa6
        • 2.Qa7#
      • 1...Sxc6
        • 2.Qb7#
      • 1...Sd7!
    • 1.Qb1?
      • threat
        • 2.Qb7#
        • 2.Qxb8#
      • 1...Sxc6
        • 2.Qb7#
      • 1...Sd7
        • 2.Qb7#
      • 1...Sxa6!
  • Keys
    • 1.Se6!
      • threat
        • 2.Sc7#
        • 2.Qa7#
        • 2.Qb7#
      • 1...Sxa6
        • 2.Qa7#
      • 1...Sxc6
        • 2.Qb7#
      • 1...Sd7
        • 2.Sc7#

FEATURES

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