MESON Chess Problem Database

Problem Display
PID: 235338 (8/K7/2P1PP1N/3k1NQ1/1Pp5/2p2P2/7B/1b1r3n w - - 0 1)

Makaronets, Leonid

Schach, 1977

8/K7/2P1PP1N/3k1NQ1/1Pp5/2p2P2/7B/1b1r3n

#2

10 + 6

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kxc6
      • 2.Se7#
    • 1...Kxe6
      • 2.Sg7#
  • Tries
    • 1.Se3+?
      • 1...Kxc6
        • 2.Qc5#
        • 2.b5#
      • 1...Kxe6
        • 2.Qe5#
      • 1...Kd4!
    • 1.Se7+?
      • 1...Kxe6
        • 2.Qe5#
      • 1...Kd4!
    • 1.Qg7?
      • threat
        • 2.Qd7#
      • 1...Kxc6
        • 2.Qb7#
      • 1...Kxe6
        • 2.Qf7#
      • 1...Sg3!
  • Keys
    • 1.Qf4!
      • threat
        • 2.Qd6#
      • 1...Kxc6
        • 2.Qxc4#
      • 1...Kxe6
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(f);S_FLIGHT,XP(F)::S(D)
    • K(f);S_FLIGHT,XP(G)::S(D)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(f);S_FLIGHT,XP(G)::QAR1(E)
      • Refutation
        • K(f);P-FLIGHT
    • Try
      • S(D);CHECK
      • Vars
        • K(f);S_FLIGHT,XP(G)::QAR1(E)
      • Refutation
        • K(f);P-FLIGHT
    • Try
      • Q(E);
      • Threat
        • QAR2(E)
      • Vars
        • K(f);OGATEB,S_FLIGHT,XP(F)::QAB1(E)
        • K(f);OGATEB,S_FLIGHT,XP(G)::QAB1(E)
      • Refutation
        • S(c);
  • Actual
    • Q(E);
    • Threat
      • QAR1(E)
    • Vars
      • K(f);S_FLIGHT,XP(F)::QAR2(E),XP(e)
      • K(f);S_FLIGHT,XP(G)::QAR1(E)
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