MESON Chess Problem Database

Problem Display
PID: 15360 (8/Q1P5/4P3/1k6/4K3/8/N7/N7 w - - 0 1)

Mironov, Aleksey Fedorovich

3rd Prize, Vecherni Kharkov, 1982

8/Q1P5/4P3/1k6/4K3/8/N7/N7

#2

6 + 1

3296 Shakhmatny zadachi miniaturi 1987
5454 Near Snap 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sb3?
      • 1...Kc4
        • 2.Qa4#
      • 1...Kc6!
    • 1.Qc5+?
      • 1...Ka4
        • 2.Sc3#
        • 2.Qb4#
      • 1...Ka6
        • 2.c8Q#
        • 2.c8B#
      • 1...Kxc5!
    • 1.Qb6+?
      • 1...Ka4
        • 2.Qb4#
        • 2.Qa6#
      • 1...Kc4
        • 2.Qb4#
        • 2.Qc6#
        • 2.c8Q#
        • 2.c8R#
      • 1...Kxb6!
    • 1.Qa6+?
      • 1...Kc5
        • 2.Sb3#
        • 2.c8Q#
        • 2.c8R#
      • 1...Kxa6!
    • 1.c8B?
      • 1...Kc4
        • 2.Ba6#
      • 1...Kc6!
  • Keys
    • 1.c8S!
      • 1...Kc4
        • 2.Sd6#
      • 1...Kc6
        • 2.Qb6#

Anticipated by 28687(1951)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(A);
      • Vars
        • K(a);S_FLIGHT::QAR2(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);S_FLIGHT::P=Q
      • Refutation
        • K(a);P-FLIGHT,XQ(E)
    • Try
      • Q(E);CHECK
      • Refutation
        • K(a);P-FLIGHT,XQ(E)
    • Try
      • Q(E);CHECK
      • Refutation
        • K(a);S_FLIGHT,XQ(E)
    • Try
      • P(F);
      • Vars
        • K(a);S_FLIGHT::B(F)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • P(F);
    • Vars
      • K(a);S_FLIGHT::S(F)
      • K(a);S_FLIGHT::QAR1(E)
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