MESON Chess Problem Database

Problem Display
PID: 235007 (8/5N2/4pk2/4N3/8/2K5/8/Q7 w - - 0 1)

Akimov, Nikolai Nikolaevich

Seven Chess Notes (Sem Shakhmatiykh not), 2019

8/5N2/4pk2/4N3/8/2K5/8/Q7

#2

4 + 2

5454 Near Snap 2021
15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Qd1?
      • 1...Kf5
        • 2.Qf3#
      • 1...Ke7
        • 2.Qd8#
      • 1...Kg7!
    • 1.Qh1?
      • 1...Kf5
        • 2.Qf3#
      • 1...Kg7
        • 2.Qh8#
      • 1...Ke7!
  • Keys
    • 1.Qa8!
      • 1...Kf5
        • 2.Qf3#
      • 1...Ke7
        • 2.Qd8#
      • 1...Kg7
        • 2.Qh8#

Anticipated by 206947(1859), 4506(1873), 32680(1873), 214539(1878), 218611(1882), 218488(1882), 24321(1885), 181144(1904), 182379(1906), 109336(1920), 22076(1924), 206740(1925), 227725(1926), 76425(1929), 46372(1941), 18804(1958), 218807(1976), 138100(1981), 133136(1983), 211346(1986), 184446(2000), 47757(2003), 67253(2006), 232491(2012)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Vars
        • K(b);P-FLIGHT::QAR2(A)
        • K(b);S_FLIGHT::QAB1(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(b);P-FLIGHT::QAR2(A)
        • K(b);S_FLIGHT::QAB1(A)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(b);P-FLIGHT::QAR2(A)
      • K(b);S_FLIGHT::QAB1(A)
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