MESON Chess Problem Database

Problem Display
PID: 255804 (8/8/5p1K/8/4kNQ1/8/3B4/8 w - - 0 1)

Bazhan, Anastasia

6th HM., Astafyeva-30 JT (Lightweights) (Kudesnik), 2021

8/8/5p1K/8/4kNQ1/8/3B4/8

#2

4 + 2

SOLUTION

  • SOUND
  • Tries
    • 1.Qe2+?
      • 1...Kf5
        • 2.Qe6#
      • 1...Kd4!
    • 1.Qh5?
      • threat
        • 2.Qd5#
      • 1...Kd4
        • 2.Qd5#
      • 1...f5!
    • 1.Qe6+?
      • 1...Kd4
        • 2.Qd5#
      • 1...Kf3!
    • 1.Qd7?
      • threat
        • 2.Qd5#
      • 1...Ke5
        • 2.Qd5#
      • 1...Kf3!
    • 1.Qg2+?
      • 1...Kd4
        • 2.Qd5#
      • 1...Ke5
        • 2.Qd5#
      • 1...Kf5!
  • Keys
    • 1.Qg8!
      • threat
        • 2.Qd5#
      • 1...Kf3
        • 2.Qg2#
      • 1...Kd4
        • 2.Qd5#
      • 1...Ke5
        • 2.Qd5#
      • 1...Kf5
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(C)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);
      • Threat
        • QAB1(C)
      • Vars
        • K(a);P-FLIGHT::QAR1(C)
      • Refutation
        • P(b);
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);
      • Threat
        • QAB1(C)
      • Vars
        • K(a);P-FLIGHT::QAR1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT::QAR1(C)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(C);
    • Threat
      • QAB1(C)
    • Vars
      • K(a);N_GUARD,S_FLIGHT::QAB1(C)
      • K(a);P-FLIGHT::QAR1(C)
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