MESON Chess Problem Database

Problem Display
PID: 270923 (Q7/7K/8/3p1N2/4k3/3N4/8/3B4 w - - 0 1)

Akimov, Nikolai Nikolaevich

Mosiashvili-75 JT (Kudesnik), 2023

Q7/7K/8/3p1N2/4k3/3N4/8/3B4

#2

5 + 2

SOLUTION

  • SOUND
  • Tries
    • 1.Kg7?
      • 1...Kxf5
        • 2.Qxd5#
      • 1...Kxd3!
    • 1.Qa1?
      • 1...Kxd3
        • 2.Qd4#
      • 1...Kxf5
        • 2.Qe5#
      • 1...d4!
    • 1.Qa6?
      • 1...Kxf5
        • 2.Qg6#
      • 1...d4!
    • 1.Qc8?
      • 1...Kxd3
        • 2.Qc2#
      • 1...d4!
    • 1.Qe8+?
      • 1...Kxf5
        • 2.Qg6#
        • 2.Qe5#
      • 1...Kxd3!
    • 1.Qh8?
      • 1...Kxd3
        • 2.Qd4#
      • 1...Kxf5
        • 2.Qe5#
      • 1...d4!
  • Keys
    • 1.Qc6!
      • 1...Kxd3
        • 2.Qc2#
      • 1...Kxf5
        • 2.Qg6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Vars
        • K(a);N_GUARD,N_SPINP(b),S_FLIGHT,XS(C)::QAR2(E),XP(b)
      • Refutation
        • K(a);N_SPINP(b),S_FLIGHT,XS(B)
    • Try
      • Q(E);N_PINP(b)
      • Vars
        • K(a);N_GUARD,S_FLIGHT,XS(B)::QAR1(E)
        • K(a);N_GUARD,S_FLIGHT,XS(C)::QAR1(E)
      • Refutation
        • P(b);
    • Try
      • Q(E);N_PINP(b)
      • Vars
        • K(a);OGATEB,S_FLIGHT,XS(C)::QAB1(E)
      • Refutation
        • P(b);
    • Try
      • Q(E);N_PINP(b)
      • Vars
        • K(a);OGATEB,S_FLIGHT,XS(B)::QAB1(E)
      • Refutation
        • P(b);
    • Try
      • Q(E);CHECK,N_PINP(b)
      • Refutation
        • K(a);S_FLIGHT,XS(B)
    • Try
      • Q(E);N_PINP(b)
      • Vars
        • K(a);N_GUARD,S_FLIGHT,XS(B)::QAR1(E)
        • K(a);N_GUARD,S_FLIGHT,XS(C)::QAR1(E)
      • Refutation
        • P(b);
  • Actual
    • Q(E);
    • Vars
      • K(a);N_SPINP(b),OGATEB,S_FLIGHT,XS(B)::QAB1(E)
      • K(a);N_SPINP(b),OGATEB,S_FLIGHT,XS(C)::QAB1(E)
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