MESON Chess Problem Database

Problem Display
PID: 252317 (8/B7/4p3/4P3/Q1NNk2P/7P/8/4K3 w - - 0 1)

Borisenko, Alexey Ivanovich

Zadachi i Etyudi, 2004

8/B7/4p3/4P3/Q1NNk2P/7P/8/4K3

#2

8 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3
      • 2.Qc2#
    • 1...Kd5
      • 2.Qc6#
  • Tries
    • 1.Kd1?
      • 1...Kd3
        • 2.Qc2#
      • 1...Kd5
        • 2.Qc6#
      • 1...Kf4!
    • 1.Kf1?
      • 1...Kd3
        • 2.Qc2#
      • 1...Kd5
        • 2.Qc6#
      • 1...Kf4!
    • 1.Kd2?
      • 1...Kd5
        • 2.Qc6#
      • 1...Kf4!
    • 1.Ke2?
      • 1...Kd5
        • 2.Qc6#
      • 1...Kf4!
    • 1.Kf2?
      • 1...Kd3
        • 2.Qc2#
      • 1...Kd5
        • 2.Qc6#
      • 1...Kf4!
    • 1.Bb6?
      • 1...Kd3
        • 2.Qc2#
      • 1...Kd5
        • 2.Qc6#
      • 1...Kf4!
    • 1.Qd1?
      • threat
        • 2.Qf3#
      • 1...Kf4
        • 2.Qf3#
        • 2.Qg4#
      • 1...Kd5!
    • 1.Qb3?
      • threat
        • 2.Qf3#
      • 1...Kf4
        • 2.Qe3#
        • 2.Qf3#
      • 1...Kd5!
    • 1.Qc6+?
      • 1...Kf4
        • 2.Qf3#
      • 1...Kd3!
    • 1.Qa3?
      • threat
        • 2.Qf3#
      • 1...Kf4
        • 2.Qe3#
        • 2.Qf3#
      • 1...Kd5!
    • 1.h5?
      • 1...Kd3
        • 2.Qc2#
      • 1...Kd5
        • 2.Qc6#
      • 1...Kf4!
  • Keys
    • 1.Se2!
      • 1...Kd3
        • 2.Sb2#
      • 1...Kf3
        • 2.Qc6#
      • 1...Kd5
        • 2.Sc3#
      • 1...Kf5
        • 2.Qc2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);N_GUARD,S_FLIGHT::QAB1(C)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAB1(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • K(A);P-FLIGHT
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAB1(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • K(A);S_FLIGHT
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAB1(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • K(A);P-FLIGHT
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAB1(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • K(A);S_FLIGHT
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAB1(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(H);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAB1(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);
      • Threat
        • QAB1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);
      • Threat
        • QAB1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT::QAR1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);
      • Threat
        • QAB1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • P(F);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAB1(C)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • S(E);
    • Vars
      • K(a);N_GUARD,S_FLIGHT::S(D)
      • K(a);N_GUARD,S_FLIGHT::QAB(C)
      • K(a);N_GUARD,S_FLIGHT::S(E)
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