MESON Chess Problem Database

Problem Display
PID: 246691 (8/3K4/8/4kpP1/2Q3p1/8/5P2/8 w - - 0 1)

Parkhomenko, Nikolai A

Magadanskaya Pravda, 1998

8/3K4/8/4kpP1/2Q3p1/8/5P2/8

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...g3
      • 2.f4#
  • Tries
    • 1.Kc7?
      • 1...g3
        • 2.f4#
      • 1...f4!
    • 1.Ke7?
      • 1...g3
        • 2.f4#
      • 1...f4!
    • 1.Qe6+?
      • 1...Kf4
        • 2.Qe3#
      • 1...Kd4!
    • 1.Qc5+?
      • 1...Kf4
        • 2.Qe3#
      • 1...Ke4!
    • 1.f3?
      • threat
        • 2.f4#
      • 1...f4
        • 2.Qe4#
        • 2.Qc5#
      • 1...gxf3!
  • Keys
    • 1.Kc6!
      • 1...f4
        • 2.Qd5#
      • 1...g3
        • 2.f4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(a);N_GUARD::P(A)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Vars
        • P(a);N_GUARD::P(A)
      • Refutation
        • P(c);
    • Try
      • K(D);P-FLIGHT
      • Vars
        • P(a);N_GUARD::P(A)
      • Refutation
        • P(c);
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAB1(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(B)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • P(A);
      • Threat
        • P(A)
      • Refutation
        • P(a);XP(A)
  • Actual
    • K(D);S_FLIGHT
    • Vars
      • P(c);SBLOCK::QAR1(B)
      • P(a);N_GUARD::P(A)
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