MESON Chess Problem Database

Problem Display
PID: 146965 (6NQ/3k1P2/8/2K5/6N1/8/8/8 w - - 0 1)

Kirilpov, S

Shakhmaty v SSSR, 1974

6NQ/3k1P2/8/2K5/6N1/8/8/8

#2

5 + 1

145 StrateGems 2012

SOLUTION

  • SOUND
  • Tries
    • 1.S8h6?
      • 1...Ke6
        • 2.Qe8#
      • 1...Ke7
        • 2.Qe8#
      • 1...Kc7!
    • 1.Se7?
      • 1...Kc7
        • 2.Qc8#
      • 1...Kxe7
        • 2.Qe8#
      • 1...Ke6!
    • 1.Qg7?
      • 1...Kc7
        • 2.f8Q#
        • 2.f8R#
      • 1...Kc8
        • 2.f8Q#
        • 2.f8R#
      • 1...Kd8
        • 2.f8Q#
        • 2.f8R#
      • 1...Ke6!
    • 1.f8Q?
      • 1...Kc7
        • 2.Qhg7#
        • 2.Qh7#
      • 1...Ke6!
    • 1.f8R?
      • 1...Kc7
        • 2.Qg7#
        • 2.Qh7#
      • 1...Ke6!
  • Keys
    • 1.Qh7!
      • 1...Ke6
        • 2.f8S#
      • 1...Kc7
        • 2.f8Q#
        • 2.f8R#
      • 1...Kc8
        • 2.f8Q#
        • 2.f8R#
      • 1...Kd8
        • 2.f8Q#
        • 2.f8R#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);
      • Vars
        • K(a);S_FLIGHT::QAR2(E)
        • K(a);P-FLIGHT::QAR1(E)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(D);
      • Vars
        • K(a);P-FLIGHT::QAR1(E)
        • K(a);P-FLIGHT,XS(D)::QAR1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Vars
        • K(a);P-FLIGHT::P=Q
        • K(a);S_FLIGHT::P=Q
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • P(C);
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • P(C);
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(E);
    • Vars
      • K(a);S_FLIGHT::P=S
      • K(a);P-FLIGHT::P=Q
      • K(a);S_FLIGHT::P=Q
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