MESON Chess Problem Database

Problem Display
PID: 199902 (4B3/8/4Q3/4B3/3Pk3/8/8/5K2 w - - 0 1)

Chernikh, Vassily

Zadachi i Etyudi, 2017

4B3/8/4Q3/4B3/3Pk3/8/8/5K2

#2

5 + 1

5454 Near Snap 2019

SOLUTION

  • SOUND
  • Tries
    • 1.Bg6+?
      • 1...Kf3
        • 2.Qh3#
      • 1...Ke3!
    • 1.Qc4?
      • 1...Ke3
        • 2.Qe2#
      • 1...Kf3
        • 2.Qe2#
      • 1...Kf5!
    • 1.Qh6?
      • 1...Kf3
        • 2.Qf4#
      • 1...Kd5
        • 2.Qc6#
      • 1...Kf5
        • 2.Qg6#
      • 1...Kd3!
  • Keys
    • 1.Qa6!
      • 1...Ke3
        • 2.Qe2#
      • 1...Kf3
        • 2.Qe2#
      • 1...Kd5
        • 2.Qc6#
      • 1...Kf5
        • 2.Qg6#

Anticipated by 31378(1883), 193658(1915), 206705(1925), 106765(1955), 105390(1991), 99408(1995)

This anticipates 217416(2020)

FEATURES

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