MESON Chess Problem Database

Problem Display
PID: 257526 (Q7/8/4N3/3pk3/8/7B/3P3K/8 w - - 0 1)

Gladtsinova, Vera

Astafyeva-30 JT (Kudesnik), 2021

Q7/8/4N3/3pk3/8/7B/3P3K/8

#2

5 + 2

5454 Near Snap 2022

SOLUTION

  • SOUND
  • Tries
    • 1.Qd8?
      • 1...d4
        • 2.Qxd4#
      • 1...Ke4!
    • 1.Qf8?
      • threat
        • 2.Qf4#
      • 1...Ke4
        • 2.Qf5#
      • 1...d4!
  • Keys
    • 1.Qa7!
      • 1...Ke4
        • 2.Qe3#
      • 1...Kd6
        • 2.Qc7#
      • 1...Kf6
        • 2.Qg7#
      • 1...d4
        • 2.Qxd4#

Anticipated by 250462(2009), 267422(2013)

This anticipates 269857(2023)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(E);
      • Vars
        • P(a);OGATE::QAB1(E),XP(a)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(E);
      • Threat
        • QAB1(E)
      • Vars
        • K(b);N_GUARD,P-FLIGHT::QAB1(E)
      • Refutation
        • P(a);
  • Actual
    • Q(E);
    • Vars
      • K(b);N_GUARD,P-FLIGHT::QAR1(E)
      • K(b);N_GUARD,S_FLIGHT::QAB1(E)
      • P(a);::QAB1(E),XP(a)
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