MESON Chess Problem Database

Problem Display
PID: 257771 (8/5B1Q/1b6/8/2Nk2K1/8/2P5/8 w - - 0 1)

Matrenin, Mikhail Vasilevich

Zhuk, Aleksandr Gnatovich

Zadachi i Etyudi, 2007

8/5B1Q/1b6/8/2Nk2K1/8/2P5/8

#2

5 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Bc5
      • 2.Qd3#
  • Tries
    • 1.Qh3?
      • threat
        • 2.Qe3#
      • 1...Ke4
        • 2.Qd3#
      • 1...Kc5!
    • 1.Qg7+?
      • 1...Ke4
        • 2.Qe5#
      • 1...Kc5!
    • 1.Qh8+?
      • 1...Ke4
        • 2.Qe5#
      • 1...Kc5!
  • Keys
    • 1.Qh6!
      • threat
        • 2.Qe3#
      • 1...Kc3
        • 2.Qd2#
      • 1...Ke4
        • 2.Qf4#
      • 1...Kc5
        • 2.Qxb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(b);SBLOCK::QAR1(E)
  • Tries
    • Try
      • Q(E);
      • Threat
        • QAB1(E)
      • Vars
        • K(a);N_GUARD,P-FLIGHT::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(E)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(E);
    • Threat
      • QAB1(E)
    • Vars
      • K(a);N_GUARD,S_FLIGHT::QAB1(E)
      • K(a);N_GUARD,P-FLIGHT::QAR1(E)
      • K(a);N_GUARD,S_FLIGHT::QAB1(E),XB(b)
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