MESON Chess Problem Database

Problem Display
PID: 198080 (8/1Q6/8/4k3/7B/2K4B/8/8 w - - 0 1)

Chernikh, Vassily

Zadachi i Etyudi, 2015

8/1Q6/8/4k3/7B/2K4B/8/8

#2

4 + 1

5454 Near Snap 2019
3713 Snap 2019

SOLUTION

  • SOUND
  • Tries
    • 1.Kd3?
      • 1...Kf4
        • 2.Qe4#
      • 1...Kd6!
    • 1.Kc4?
      • 1...Kd6
        • 2.Bg3#
      • 1...Kf4!
    • 1.Qe7+?
      • 1...Kd5
        • 2.Bg2#
      • 1...Kf4!
  • Keys
    • 1.Bg2!
      • 1...Kf4
        • 2.Qe4#
      • 1...Kf5
        • 2.Qe4#
      • 1...Kd6
        • 2.Qe7#
      • 1...Ke6
        • 2.Qd5#

Anticipated by 175785(1898), 183108(1907), 198114(1920), 140990(1979), 79151(2002)

FEATURES

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