MESON Chess Problem Database

Problem Display
PID: 79159 (Q7/8/4P3/1kB5/1P6/8/2K5/8 w - - 0 1)

Akimov, Nikolai Nikolaevich

64 Shakhmatnoe obozrenie, 2005

Q7/8/4P3/1kB5/1P6/8/2K5/8

#2

5 + 1

3713 Snap 2008
5454 Near Snap 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qf3?
      • 1...Kc4
        • 2.Qd3#
      • 1...Ka6
        • 2.Qc6#
      • 1...Ka4!
    • 1.Qe4?
      • 1...Ka6
        • 2.Qc6#
      • 1...Ka4!
    • 1.Qd5?
      • 1...Ka6
        • 2.Qc6#
      • 1...Ka4!
    • 1.Qb7+?
      • 1...Ka4
        • 2.Qa6#
      • 1...Kc4!
    • 1.Qa3?
      • 1...Kc4
        • 2.Qd3#
      • 1...Kc6!
    • 1.Qa7?
      • 1...Kc6
        • 2.Qd7#
      • 1...Kc4!
    • 1.Qc8?
      • 1...Ka4
        • 2.Qa6#
      • 1...Kc4!
    • 1.Qe8+?
      • 1...Ka6
        • 2.Qc6#
      • 1...Kc4!
  • Keys
    • 1.Qd8!
      • 1...Ka4
        • 2.Qa5#
      • 1...Kc4
        • 2.Qd3#
      • 1...Ka6
        • 2.Qb6#
      • 1...Kc6
        • 2.Qd7#

Anticipated by 24210(1927), 231090(1927), 33184(1938), 16378(1940), 30942(1943), 47022(1955), 73436(1961), 12363(1978), 46971(1989), 142078(1989), 84992(1992), 120638(1995)

This anticipates 286893(2021)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(E);
      • Vars
        • K(a);S_FLIGHT::QAB1(E)
        • K(a);S_FLIGHT::QAR2(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Vars
        • K(a);S_FLIGHT::QAR2(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Vars
        • K(a);S_FLIGHT::QAR2(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR2(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Vars
        • K(a);S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Vars
        • K(a);S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Vars
        • K(a);S_FLIGHT::QAR2(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR2(E)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(E);
    • Vars
      • K(a);S_FLIGHT::QAR1(E)
      • K(a);S_FLIGHT::QAB1(E)
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