MESON Chess Problem Database

Problem Display
PID: 164530 (4Q3/8/4p3/6K1/2Nk4/4N3/2P5/8 w - - 0 1)

Zuk, O

Sachmatija, 2007

4Q3/8/4p3/6K1/2Nk4/4N3/2P5/8

#2

5 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...e5
      • 2.Qxe5#
  • Tries
    • 1.Qb5?
      • threat
        • 2.Qe5#
      • 1...Kc3
        • 2.Qb2#
      • 1...e5
        • 2.Qxe5#
      • 1...Ke4!
    • 1.Qxe6?
      • threat
        • 2.Qe5#
      • 1...Kc5
        • 2.Qb6#
      • 1...Kc3!
    • 1.Qd8+?
      • 1...Kc3
        • 2.Qd2#
      • 1...Kc5
        • 2.Qb6#
      • 1...Ke4!
  • Keys
    • 1.Qb8!
      • threat
        • 2.Qe5#
      • 1...Kc3
        • 2.Qb2#
      • 1...Ke4
        • 2.Qf4#
      • 1...Kc5
        • 2.Qb6#
      • 1...e5
        • 2.Qxe5#

FEATURES

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