MESON Chess Problem Database

Problem Display
PID: 61187 (2k5/8/1Kn1P3/8/7Q/8/8/8 w - - 0 1)

Kapustin, Fedor Mikhailovich

Uralski Problemist, 2004

2k5/8/1Kn1P3/8/7Q/8/8/8

#2

3 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Sb4
      • 2.Qh8#
    • 1...Sd4
      • 2.Qh8#
    • 1...Sa5
      • 2.Qh8#
    • 1...Se5
      • 2.Qh8#
    • 1...Sa7
      • 2.Qh8#
    • 1...Sb8
      • 2.Qh8#
  • Tries
    • 1.Qg3?
      • threat
        • 2.Qc7#
      • 1...Se5
        • 2.Qg8#
      • 1...Kd8!
    • 1.Qe7?
      • threat
        • 2.Qc7#
      • 1...Kb8
        • 2.Qb7#
      • 1...Sxe7!
    • 1.Qh2?
      • threat
        • 2.Qc7#
      • 1...Se5
        • 2.Qh8#
      • 1...Kd8!
    • 1.Qh7?
      • threat
        • 2.Qc7#
      • 1...Kb8
        • 2.Qb7#
      • 1...Kd8
        • 2.Qd7#
      • 1...Se7!
  • Keys
    • 1.Qf4!
      • threat
        • 2.Qc7#
      • 1...Kd8
        • 2.Qf8#
      • 1...Se5
        • 2.Qf8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 5
  • Sets
    • S(a);N_GUARD::QAR(A)
    • S(a);N_GUARD,SBLOCK::QAR(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • S(a);N_GUARD::QAR(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • K(b);P-FLIGHT::QAR1(A)
      • Refutation
        • S(a);XQ(A)
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • S(a);N_GUARD::QAR(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • K(b);P-FLIGHT::QAR1(A)
      • Refutation
        • S(a);
  • Actual
    • Q(A);
    • Threat
      • QAR1(A)
    • Vars
      • K(b);P-FLIGHT::QAR2(A)
      • S(a);N_GUARD::QAR(A)
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