MESON Chess Problem Database

Problem Display
PID: 263112 (4K3/8/5N2/6k1/QB6/8/5P2/1B6 w - - 0 1)

Shumarin, Vladimir Pavlovich

SuperProblem, 2020

4K3/8/5N2/6k1/QB6/8/5P2/1B6

#2

6 + 1

6490 yacpdb 2022
5454 Near Snap 2023

SOLUTION

  • SOUND
  • Tries
    • 1.Qb5+?
      • 1...Kf4
        • 2.Qf5#
      • 1...Kh4
        • 2.Qh5#
      • 1...Kh6
        • 2.Bf8#
      • 1...Kxf6!
    • 1.Qa5+?
      • 1...Kf4
        • 2.Qf5#
      • 1...Kh4
        • 2.Qh5#
      • 1...Kh6
        • 2.Bf8#
      • 1...Kxf6!
    • 1.Qa7?
      • 1...Kf4
        • 2.Qe3#
      • 1...Kxf6
        • 2.Qe7#
      • 1...Kh6
        • 2.Bd2#
      • 1...Kh4!
  • Keys
    • 1.Qd7!
      • 1...Kf4
        • 2.Qf5#
      • 1...Kh4
        • 2.Qg4#
      • 1...Kxf6
        • 2.Qe7#
      • 1...Kh6
        • 2.Bd2#

Anticipated by 264636(2009)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAR1(C)
        • K(a);OGATE,S_FLIGHT::QAR1(C)
        • K(a);N_GUARD,S_FLIGHT::B(D)
      • Refutation
        • K(a);S_FLIGHT,XS(E)
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAR1(C)
        • K(a);OGATE,S_FLIGHT::QAR1(C)
        • K(a);N_GUARD,S_FLIGHT::B(D)
      • Refutation
        • K(a);S_FLIGHT,XS(E)
    • Try
      • Q(C);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAB1(C)
        • K(a);OGATEB,S_FLIGHT,XS(E)::QAB1(C)
        • K(a);N_GUARD,S_FLIGHT::B(D)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(C);
    • Vars
      • K(a);N_GUARD,S_FLIGHT::QAR1(C)
      • K(a);OGATEB,S_FLIGHT,XS(E)::QAB1(C)
      • K(a);N_GUARD,S_FLIGHT::B(D)
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