MESON Chess Problem Database

Problem Display
PID: 87963 (3k4/K2N4/2B5/2Q1P3/7b/8/8/8 w - - 0 1)

Pypa, Volodimir Iosifovich

Buletin Problemistic, 1990

3k4/K2N4/2B5/2Q1P3/7b/8/8/8

#2

5 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ke8
      • 2.Qf8#
  • Tries
    • 1.Kb7?
      • threat
        • 2.Qf8#
      • 1...Ke8
        • 2.Qf8#
      • 1...Be7!
    • 1.Kb8?
      • threat
        • 2.Qf8#
      • 1...Ke8
        • 2.Qf8#
      • 1...Be7!
    • 1.Sb6?
      • threat
        • 2.Qd6#
      • 1...Kc7
        • 2.Qd6#
      • 1...Be7!
  • Keys
    • 1.Qd6!
      • threat
        • 2.Sb6#
      • 1...Kc8
        • 2.Sb6#
        • 2.Qb8#
      • 1...Ke8
        • 2.Qf8#
      • 1...Be7
        • 2.Qb8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT::QAR1(A)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Threat
        • QAR2(A)
      • Vars
        • K(b);P-FLIGHT::QAR1(A)
      • Refutation
        • B(a);
    • Try
      • K(D);S_FLIGHT
      • Threat
        • QAR2(A)
      • Vars
        • K(b);P-FLIGHT::QAR1(A)
      • Refutation
        • B(a);
    • Try
      • S(E);
      • Threat
        • QAR2(A)
      • Vars
        • K(b);S_FLIGHT::QAB1(A)
      • Refutation
        • B(a);
  • Actual
    • Q(A);
    • Threat
      • QAR(A)+S(E)
    • Vars
      • K(b);P-FLIGHT::QAR1(A)
      • B(a);SBLOCK::QAR2(A)
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