MESON Chess Problem Database

Problem Display
PID: 79157 (8/8/8/Pk3B2/1P6/8/K7/4Q3 w - - 0 1)

Akimov, Nikolai Nikolaevich

Sachsische Zeitung, 2004

8/8/8/Pk3B2/1P6/8/K7/4Q3

#2

5 + 1

5454 Near Snap 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Ka4
      • 2.Bd7#
  • Tries
    • 1.Qc3?
      • 1...Ka4
        • 2.Bd7#
      • 1...Ka6!
    • 1.Qe4?
      • 1...Ka4
        • 2.Bd7#
      • 1...Ka6!
  • Keys
    • 1.Qe7!
      • 1...Ka4
        • 2.Bd7#
      • 1...Kc4
        • 2.Qc5#
      • 1...Ka6
        • 2.Bd3#
      • 1...Kc6
        • 2.Qd7#

Anticipated by 2475(0000), 5102(1899), 223485(1926), 164208(1988), 157940(1993)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::B(E)
  • Tries
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::B(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::B(E)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(a);S_FLIGHT::B(E)
      • K(a);S_FLIGHT::QAR1(A)
      • K(a);S_FLIGHT::QAB1(A)
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