MESON Chess Problem Database

Problem Display
PID: 258146 (8/8/4p3/4pB1K/5kN1/8/8/1Q6 w - - 0 1)

Omelchenko, Timofey

Astafyeva-30 JT (Kudesnik), 2021

8/8/4p3/4pB1K/5kN1/8/8/1Q6

#2

4 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Kh4?
      • threat
        • 2.Qe4#
        • 2.Qf1#
      • 1...Kf3
        • 2.Qe4#
        • 2.Qf1#
      • 1...e4
        • 2.Qxe4#
        • 2.Qf1#
      • 1...exf5!
    • 1.Qd3?
      • 1...exf5
        • 2.Qe3#
      • 1...e4!
    • 1.Qg1?
      • threat
        • 2.Qf2#
      • 1...Kf3
        • 2.Qf2#
      • 1...exf5
        • 2.Qe3#
      • 1...Kxf5!
    • 1.Qb3?
      • 1...Kxf5
        • 2.Qf3#
      • 1...exf5
        • 2.Qe3#
      • 1...e4!
  • Keys
    • 1.Qe1!
      • threat
        • 2.Qf2#
      • 1...Kf3
        • 2.Qf2#
      • 1...Kxf5
        • 2.Qxe5#
      • 1...exf5
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Threat
        • DUALS(2)
      • Refutation
        • P(c);XB(C)
    • Try
      • Q(A);
      • Vars
        • P(c);SBLOCK,XB(C)::QAB1(A)
      • Refutation
        • P(b);
    • Try
      • Q(A);
      • Threat
        • QAR2(A)
      • Vars
        • K(a);P-FLIGHT::QAR1(A)
        • P(c);SBLOCK,XB(C)::QAB1(A)
      • Refutation
        • K(a);P-FLIGHT,XB(C)
    • Try
      • Q(A);
      • Vars
        • K(a);N_GUARD,P-FLIGHT,XB(C)::QAR2(A)
        • P(c);SBLOCK,XB(C)::QAB1(A)
      • Refutation
        • P(b);
  • Actual
    • Q(A);
    • Threat
      • QAR2(A)
    • Vars
      • K(a);P-FLIGHT::QAR1(A)
      • K(a);N_GUARD,P-FLIGHT,XB(C)::QAR1(A),XP(b)
      • P(c);SBLOCK,XB(C)::QAB1(A)
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