MESON Chess Problem Database

Problem Display
PID: 46030 (bB1K4/8/2k5/Q3P3/8/8/8/8 w - - 0 1)

Kopyl, Valery Volodimirovich

Uralski Problemist, 2002

bB1K4/8/2k5/Q3P3/8/8/8/8

#2

4 + 2

5454 Near Snap 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kb7
      • 2.Qb5#
  • Tries
    • 1.Bd6?
      • 1...Bb7
        • 2.Qc5#
      • 1...Kb7!
    • 1.Bc7?
      • 1...Kb7
        • 2.Qb6#
      • 1...Bb7!
    • 1.Qc5+?
      • 1...Kb7
        • 2.Qb5#
      • 1...Kxc5!
    • 1.e6?
      • 1...Kb7
        • 2.Qb5#
      • 1...Bb7!
  • Keys
    • 1.Ba7!
      • 1...Kb7
        • 2.Qb6#
      • 1...Bb7
        • 2.Qc5#

Anticipated by 77262(1990)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAR2(A)
  • Tries
    • Try
      • B(C);
      • Vars
        • B(b);SBLOCK::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(C);
      • Vars
        • K(a);S_FLIGHT::QAR1(A)
      • Refutation
        • B(b);
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT,XQ(A)
    • Try
      • P(B);
      • Vars
        • K(a);S_FLIGHT::QAR2(A)
      • Refutation
        • B(b);
  • Actual
    • B(C);
    • Vars
      • K(a);S_FLIGHT::QAR1(A)
      • B(b);SBLOCK::QAR1(A)
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