MESON Chess Problem Database

Problem Display
PID: 226525 (3B4/5Q2/8/8/3kB3/5P2/P7/3K4 w - - 0 1)

Dikusarov, Andrey Nikolayovich

Sachova skladba, 2004

3B4/5Q2/8/8/3kB3/5P2/P7/3K4

#2

6 + 1

5454 Near Snap 2020
15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ke3
      • 2.Bb6#
    • 1...Ke5
      • 2.Qf6#
  • Tries
    • 1.Kd2?
      • threat
        • 2.Qd5#
      • 1...Ke5
        • 2.Qf6#
      • 1...Kc5!
    • 1.Ba5?
      • 1...Ke3
        • 2.Bb6#
      • 1...Kc5
        • 2.Qd5#
      • 1...Ke5!
    • 1.Bb6+?
      • 1...Kc3
        • 2.Qb3#
      • 1...Ke5!
    • 1.Be7?
      • 1...Ke3
        • 2.Bc5#
      • 1...Ke5
        • 2.Qf6#
      • 1...Kc3!
    • 1.Qd5+?
      • 1...Ke3
        • 2.Qd2#
      • 1...Kc3!
  • Keys
    • 1.a3!
      • 1...Kc3
        • 2.Bf6#
      • 1...Ke3
        • 2.Bb6#
      • 1...Kc5
        • 2.Qd5#
      • 1...Ke5
        • 2.Qf6#

Anticipated by 19007(1911), 230275(2000)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::B(F)
    • K(a);S_FLIGHT::QAB1(E)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Threat
        • QAR1(E)
      • Vars
        • K(a);S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(F);
      • Vars
        • K(a);S_FLIGHT::B(F)
        • K(a);S_FLIGHT::QAR1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(F);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(F);
      • Vars
        • K(a);S_FLIGHT::B(F)
        • K(a);S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • P(B);
    • Vars
      • K(a);S_FLIGHT::B(F)
      • K(a);S_FLIGHT::QAR1(E)
      • K(a);S_FLIGHT::QAB1(E)
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