MESON Chess Problem Database

Problem Display
PID: 271349 (k7/1p1p1p2/8/1NpQ4/5nP1/3n2B1/3Kb3/8 w - - 0 1)

Matrenin, Mikhail Vasilevich

Mosiashvili-75 JT (Kudesnik), 2023

k7/1p1p1p2/8/1NpQ4/5nP1/3n2B1/3Kb3/8

#2

5 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Sg2
      • 2.Qa2#
    • 1...Sh3
      • 2.Qa2#
    • 1...Sh5
      • 2.Qa2#
    • 1...Se6
      • 2.Qa2#
    • 1...Sg6
      • 2.Qa2#
    • 1...f5
      • 2.Qg8#
    • 1...f6
      • 2.Qg8#
  • Tries
    • 1.Qe4?
      • threat
        • 2.Qe8#
      • 1...Kb8
        • 2.Qe8#
      • 1...Se6
        • 2.Qa4#
      • 1...Se5!
    • 1.Qxc5?
      • threat
        • 2.Qa7#
        • 2.Qf8#
        • 2.Qc8#
      • 1...Kb8
        • 2.Qf8#
      • 1...b6
        • 2.Qc8#
      • 1...Se6
        • 2.Qa3#
        • 2.Qa7#
        • 2.Qc8#
      • 1...Sg6
        • 2.Qa3#
        • 2.Qa7#
        • 2.Qc8#
      • 1...d6
        • 2.Qa7#
        • 2.Qc8#
      • 1...Sxc5!
    • 1.Qd6?
      • threat
        • 2.Qf8#
      • 1...Se6
        • 2.Qb8#
      • 1...Sg6
        • 2.Qb8#
      • 1...b6!
    • 1.Qxd7?
      • threat
        • 2.Qc8#
        • 2.Qe8#
        • 2.Qd8#
      • 1...Kb8
        • 2.Qe8#
        • 2.Qd8#
      • 1...Se6
        • 2.Qc8#
      • 1...b6
        • 2.Qc8#
        • 2.Qa7#
      • 1...Bxg4!
  • Keys
    • 1.Qh1!
      • threat
        • 2.Qh8#
      • 1...Kb8
        • 2.Qh8#
      • 1...Sh3
        • 2.Qa1#
      • 1...Sh5
        • 2.Qa1#
      • 1...Se6
        • 2.Qa1#
      • 1...Sg6
        • 2.Qa1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 4
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • S(c);::QAR(E)
    • P(g);OGATE::QAR(E)
  • Tries
    • Try
      • Q(E);
      • Threat
        • QAR(E)
      • Vars
        • K(h);N_SPINP(e),P-FLIGHT,P_SPINS(c)::QAR(E)
        • S(c);::QAR(E)
      • Refutation
        • S(b);
    • Try
      • Q(E);N_PINP(e),XP(d)
      • Threat
        • DUALS(3)
      • Vars
        • K(h);P-FLIGHT,P_SPINS(c)::QAR(E)
        • P(e);::QAR2(E)
      • Refutation
        • S(b);XQ(E)
    • Try
      • Q(E);N_PINP(e)
      • Threat
        • QAR(E)
      • Vars
        • S(c);::QAR1(E)
      • Refutation
        • P(e);
    • Try
      • Q(E);N_PINP(e),XP(f)
      • Threat
        • DUALS(3)
      • Vars
        • S(c);::QAR2(E)
      • Refutation
        • B(a);XP(C)
  • Actual
    • Q(E);
    • Threat
      • QAB1(E)
    • Vars
      • K(h);N_SPINP(e),P-FLIGHT,P_SPINS(c)::QAR(E)
      • S(c);::QAB(E)
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