MESON Chess Problem Database

Problem Display
PID: 213658 (2K2Q2/5p2/8/4kP2/8/3B4/3B4/8 w - - 0 1)

Kichigin, Viktor Vladimirovich

Land og Folk, 1979

2K2Q2/5p2/8/4kP2/8/3B4/3B4/8

#2

5 + 2

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qd6#
    • 1...f6
      • 2.Qc5#
  • Tries
    • 1.Kc7?
      • threat
        • 2.Qd6#
      • 1...Kd4
        • 2.Qd6#
      • 1...Kd5
        • 2.Qd6#
      • 1...Kf6!
    • 1.Kd8?
      • 1...Kd4
        • 2.Qd6#
      • 1...Kf6
        • 2.Qh8#
      • 1...f6
        • 2.Qc5#
      • 1...Kd5!
    • 1.Be3?
      • 1...Kd5
        • 2.Qc5#
      • 1...f6
        • 2.Qc5#
      • 1...Kf6!
    • 1.Qe7+?
      • 1...Kd4
        • 2.Qd6#
      • 1...Kd5!
  • Keys
    • 1.Kd7!
      • threat
        • 2.Qd6#
      • 1...Kd4
        • 2.Qd6#
      • 1...Kd5
        • 2.Qd6#
      • 1...Kf6
        • 2.Qh8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • K(a);S_FLIGHT::QAR2(E)
    • P(b);SBLOCK::QAR2(E)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Threat
        • QAB1(E)
      • Vars
        • K(a);S_FLIGHT::QAR2(E)
        • K(a);P-FLIGHT::QAR1(E)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
    • Try
      • K(D);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::QAR2(E)
        • K(a);P_SPINP(b),S_FLIGHT::QAB(E)
        • P(b);SBLOCK::QAR2(E)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(A);
      • Vars
        • K(a);P-FLIGHT::QAR1(E)
        • P(b);SBLOCK::QAR2(E)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR2(E)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • K(D);S_FLIGHT
    • Threat
      • QAB1(E)
    • Vars
      • K(a);S_FLIGHT::QAR2(E)
      • K(a);P-FLIGHT::QAR1(E)
      • K(a);P_SPINP(b),S_FLIGHT::QAB(E)
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