MESON Chess Problem Database

Problem Display
PID: 140990 (8/B1Q5/6K1/8/4k3/8/8/5B2 w - - 0 1)

Chebanov, Nikolai V

Hlas l'udu, 1979

8/B1Q5/6K1/8/4k3/8/8/5B2

#2

4 + 1

5454 Near Snap 2011
6490 yacpdb 2011
3713 Snap 2019

SOLUTION

  • SOUND
  • Tries
    • 1.Kg5?
      • 1...Kf3
        • 2.Qf4#
      • 1...Kd5!
    • 1.Kf6?
      • 1...Kd5
        • 2.Bg2#
      • 1...Kf3!
    • 1.Qc4+?
      • 1...Ke5
        • 2.Bb8#
      • 1...Kf3!
  • Keys
    • 1.Bb8!
      • 1...Ke3
        • 2.Qf4#
      • 1...Kf3
        • 2.Qf4#
      • 1...Kd4
        • 2.Qe5#
      • 1...Kd5
        • 2.Qc4#

Anticipated by 175785(1898), 183108(1907), 198114(1920)

This anticipates 79151(2002), 198080(2015)

FEATURES

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