MESON Chess Problem Database

Problem Display
PID: 168594 (K4B2/3k4/3P4/8/8/3B4/8/2Q5 w - - 0 1)

Dikusarov, Andrey Nikolayovich

Best Problems, 2005

K4B2/3k4/3P4/8/8/3B4/8/2Q5

#2

5 + 1

5454 Near Snap 2018
6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Bb5+?
      • 1...Kd8
        • 2.Be7#
        • 2.Qc7#
      • 1...Ke6!
    • 1.Bf5+?
      • 1...Kd8
        • 2.Qc8#
      • 1...Ke8!
    • 1.Bg6?
      • 1...Kd8
        • 2.Qc7#
      • 1...Ke6!
    • 1.Qc7+?
      • 1...Ke8
        • 2.Qe7#
      • 1...Ke6!
  • Keys
    • 1.Qg5!
      • 1...Kc6
        • 2.Qb5#
      • 1...Ke6
        • 2.Qf5#
      • 1...Kc8
        • 2.Bf5#
      • 1...Ke8
        • 2.Qe7#

Anticipated by 5102(1899), 10692(1967), 161761(1997), 124491(1998), 165525(1998)

This anticipates 153215(2011)

FEATURES

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