MESON Chess Problem Database

Problem Display
PID: 81027 (8/4R1Q1/6p1/4N1k1/8/6N1/8/5K2 w - - 0 1)

Livshits, Eduard Yakovlevich

1st Prize, Smer, 1967

8/4R1Q1/6p1/4N1k1/8/6N1/8/5K2

#2

5 + 2

3713 Snap 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Kg2?
      • 1...Kh4
        • 2.Qh6#
      • 1...Kf4!
    • 1.Se2?
      • 1...Kh4
        • 2.Qh6#
      • 1...Kf5
        • 2.Qxg6#
      • 1...Kh5!
    • 1.Qf6+?
      • 1...Kh6
        • 2.Sg4#
        • 2.Qh4#
        • 2.Qxg6#
      • 1...Kxf6!
    • 1.Qxg6+?
      • 1...Kh4
        • 2.Rh7#
        • 2.Qg4#
      • 1...Kf4!
    • 1.Qf7?
      • 1...Kh6
        • 2.Qxg6#
      • 1...Kh4!
  • Keys
    • 1.Kf2!
      • 1...Kf4
        • 2.Qf6#
      • 1...Kh4
        • 2.Qh6#

This anticipates 108226(1991)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Vars
        • K(a);N_SPINP(b),S_FLIGHT::QAR2(E)
      • Refutation
        • K(a);N_SPINP(b),S_FLIGHT
    • Try
      • S(B);
      • Vars
        • K(a);N_SPINP(b),S_FLIGHT::QAR2(E)
        • K(a);N_SPINP(b),P-FLIGHT::QAB1(E),XP(b)
      • Refutation
        • K(a);N_SPINP(b),P-FLIGHT
    • Try
      • Q(E);CHECK,N_PINP(b)
      • Refutation
        • K(a);S_FLIGHT,XQ(E)
    • Try
      • Q(E);CHECK,XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);N_PINP(b)
      • Vars
        • K(a);S_FLIGHT::QAR1(E),XP(b)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • K(A);P-FLIGHT
    • Vars
      • K(a);N_SPINP(b),S_FLIGHT::QAR2(E)
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