MESON Chess Problem Database

Problem Display
PID: 272287 (8/3B4/1Q2P3/4k3/1P2p2K/8/8/8 w - - 0 1)

Kharchisin, Nikolai

Paramonov, M

Mosiashvili-75 JT (Kudesnik), 2023

8/3B4/1Q2P3/4k3/1P2p2K/8/8/8

#2

5 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Qc5#
  • Tries
    • 1.Kg5?
      • threat
        • 2.Qc5#
      • 1...Kd5
        • 2.Qc5#
      • 1...e3!
    • 1.Qf2?
      • 1...Kd5
        • 2.Qc5#
      • 1...Kd6
        • 2.Qc5#
      • 1...e3!
    • 1.Qc5+?
      • 1...Kf6
        • 2.Qg5#
      • 1...Kf4!
  • Keys
    • 1.Qe3!
      • 1...Kd5
        • 2.Qc5#
      • 1...Kf5
        • 2.Qg5#
      • 1...Kd6
        • 2.Qc5#
      • 1...Kf6
        • 2.Qg5#

There are these versions: 272500

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(b);N_GUARD,P-FLIGHT::QAR1(C)
  • Tries
    • Try
      • K(B);S_FLIGHT
      • Threat
        • QAR2(C)
      • Vars
        • K(b);P-FLIGHT::QAR1(C)
      • Refutation
        • P(a);
    • Try
      • Q(C);
      • Vars
        • K(b);N_GUARD,P-FLIGHT::QAR1(C)
        • K(b);N_GUARD,S_FLIGHT::QAB1(C)
      • Refutation
        • P(a);
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAB1(C)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(C);P_PINP(a)
    • Vars
      • K(b);N_GUARD,N_SPINP(a),P-FLIGHT::QAR1(C)
      • K(b);N_GUARD,N_SPINP(a),S_FLIGHT::QAB1(C)
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Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).