MESON Chess Problem Database

Problem Display
PID: 228953 (3Q4/3p3p/3k2pr/P5Kp/2PP3P/2P5/8/8 w - - 0 1)

Karsch, Wilhelm

Sudetendeutsche Schachblatter, 1926

3Q4/3p3p/3k2pr/P5Kp/2PP3P/2P5/8/8

#2

7 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kc6
      • 2.Qb6#
    • 1...Ke6
      • 2.Qf6#
  • Tries
    • 1.Kf6?
      • threat
        • 2.Qb6#
      • 1...Kc6
        • 2.Qb6#
      • 1...g5+!
    • 1.a6?
      • 1...Ke6
        • 2.Qf6#
      • 1...Kc6!
  • Keys
    • 1.d5!
      • 1...Kc5
        • 2.Qc7#
      • 1...Ke5
        • 2.Qe7#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • K(b);N_SPINP(e),P-FLIGHT::QAR1(G)
  • Tries
    • Try
      • K(F);S_FLIGHT
      • Threat
        • QAR2(G)
      • Vars
        • K(b);N_SPINP(e),P-FLIGHT::QAR1(G)
      • Refutation
        • P(c);CHECK
    • Try
      • P(E);
      • Vars
        • K(b);N_SPINP(e),P-FLIGHT::QAR1(G)
      • Refutation
        • K(b);N_SPINP(e),P-FLIGHT
  • Actual
    • P(C);
    • Vars
      • K(b);N_SPINP(e),S_FLIGHT::QAR2(G)
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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).