MESON Chess Problem Database

Problem Display
PID: 110144 (8/8/B1Qpk1NN/8/8/8/8/3K4 w - - 0 1)

Chistyakov, Aleksandr N

Kudesnik 02. TT, 1993

8/8/B1Qpk1NN/8/8/8/8/3K4

#2

5 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qa4?
      • 1...Kd5
        • 2.Qc4#
      • 1...d5
        • 2.Qc6#
      • 1...Kf6!
    • 1.Qb5?
      • threat
        • 2.Qf5#
      • 1...d5
        • 2.Qc6#
      • 1...Kf6!
    • 1.Qb7?
      • threat
        • 2.Qf7#
      • 1...d5
        • 2.Qc6#
        • 2.Qe7#
      • 1...Kf6!
    • 1.Qa8?
      • 1...Kd7
        • 2.Qc8#
      • 1...d5
        • 2.Qc6#
      • 1...Kf6!
    • 1.Qc1?
      • 1...Kd5
        • 2.Qc4#
      • 1...Kd7
        • 2.Qc8#
      • 1...d5
        • 2.Qc6#
      • 1...Kf6!
    • 1.Qc2?
      • threat
        • 2.Qf5#
      • 1...Kd5
        • 2.Qc4#
      • 1...Kd7
        • 2.Qc8#
      • 1...d5
        • 2.Qc6#
      • 1...Kf6!
    • 1.Qc4+?
      • 1...Kd7
        • 2.Qc8#
      • 1...d5
        • 2.Qc6#
      • 1...Kf6!
    • 1.Qc7?
      • threat
        • 2.Qf7#
      • 1...Kd5
        • 2.Qc4#
      • 1...d5
        • 2.Qc6#
        • 2.Qe7#
      • 1...Kf6!
    • 1.Qc8+?
      • 1...Kd5
        • 2.Qc4#
      • 1...Kf6!
  • Keys
    • 1.Qc3!
      • 1...Kd5
        • 2.Qc4#
      • 1...Kd7
        • 2.Qc8#
      • 1...d5
        • 2.Qc6#

There are these versions: 244687

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);N_PINP(a)
      • Vars
        • K(b);S_FLIGHT::QAB1(C)
        • P(a);OGATEB::QAR2(C)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(C);N_PINP(a)
      • Threat
        • QAB1(C)
      • Vars
        • P(a);OGATEB::QAR2(C)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(C);N_PINP(a)
      • Threat
        • QAB1(C)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(C);N_PINP(a)
      • Vars
        • K(b);S_FLIGHT::QAB1(C)
        • P(a);OGATEB::QAR2(C)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(C);N_PINP(a)
      • Vars
        • K(b);S_FLIGHT::QAB1(C)
        • P(a);OGATEB::QAR2(C)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(C);N_PINP(a)
      • Threat
        • QAB1(C)
      • Vars
        • K(b);S_FLIGHT::QAB1(C)
        • P(a);OGATEB::QAR2(C)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(C);CHECK,N_PINP(a)
      • Vars
        • K(b);S_FLIGHT::QAB1(C)
        • P(a);OGATEB,P_SPINP(a)::QAR2(C)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(C);N_PINP(a)
      • Threat
        • QAB1(C)
      • Vars
        • K(b);S_FLIGHT::QAB1(C)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(C);CHECK,N_PINP(a)
      • Vars
        • K(b);S_FLIGHT::QAB1(C)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • Q(C);N_PINP(a)
    • Vars
      • K(b);S_FLIGHT::QAB1(C)
      • P(a);OGATEB::QAR2(C)
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