MESON Chess Problem Database

Problem Display
PID: 48021 (3Q1Kn1/3p4/4k3/8/4PP2/8/8/8 w - - 0 1)

Gnat, Zenovi

Smena, 1998

3Q1Kn1/3p4/4k3/8/4PP2/8/8/8

#2

4 + 3

4883 Still More Fun with Chess Miniatures 2002
145 StrateGems 2008

SOLUTION

  • SOUND
  • Sets
    • 1...Kd6
      • 2.Qb6#
    • 1...Sf6
      • 2.Qe7#
    • 1...Sh6
      • 2.Qe7#
    • 1...Se7
      • 2.Qxe7#
  • Tries
    • 1.Qa5?
      • threat
        • 2.Qe5#
      • 1...Kd6
        • 2.Qb6#
      • 1...Kf6
        • 2.Qf5#
      • 1...d6
        • 2.Qf5#
      • 1...d5!
    • 1.Qxd7+?
      • 1...Kf6
        • 2.Qf5#
        • 2.Qc6#
        • 2.Qd6#
        • 2.Qf7#
      • 1...Kxd7!
    • 1.Qe8+?
      • 1...Kf6
        • 2.Qf7#
      • 1...Se7
        • 2.Qxe7#
      • 1...Kd6!
  • Keys
    • 1.Qc7!
      • threat
        • 2.Qe5#
      • 1...Kf6
        • 2.Qd6#
      • 1...d6
        • 2.Qf7#
      • 1...d5
        • 2.Qc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • K(a);P-FLIGHT,P_SPINP(b)::QAR2(C)
    • S(c);N_GUARD::QAR1(C)
    • S(c);N_GUARD::QAR1(C),XS(c)
  • Tries
    • Try
      • Q(C);
      • Threat
        • QAR1(C)
      • Vars
        • K(a);P-FLIGHT::QAR2(C)
        • K(a);P-FLIGHT::QAR1(C)
        • P(b);SBLOCK::QAB1(C)
      • Refutation
        • P(b);
    • Try
      • Q(C);CHECK,XP(b)
      • Refutation
        • K(a);S_FLIGHT,XQ(C)
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(C)
        • S(c);N_GUARD,P_SPINS(c)::QAR1(C),XS(c)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(C);
    • Threat
      • QAR1(C)
    • Vars
      • K(a);P-FLIGHT::QAR2(C)
      • P(b);OGATE,SBLOCK::QAB1(C)
      • P(b);N_GUARD::QAR2(C)
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