MESON Chess Problem Database

Problem Display
PID: 189782 (r3k3/1R6/p7/1N6/2P1p3/6K1/8/4Q3 w q - 0 1)

le Charpentier, C

Sydsvenska Dagbladet Snallposten, 1912

r3k3/1R6/p7/1N6/2P1p3/6K1/8/4Q3

#2

5 + 4

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Tries
    • 1.Sd6+?
      • 1...Kd8
        • 2.Qa5#
      • 1...Kf8!
    • 1.Qc3?
      • threat
        • 2.Qh8#
      • 1...Kd8
        • 2.Qh8#
      • 1...Kf8
        • 2.Qh8#
      • 1...0-0-0!
    • 1.Qa1?
      • threat
        • 2.Qh8#
      • 1...Kd8
        • 2.Qh8#
      • 1...Kf8
        • 2.Qh8#
      • 1...0-0-0!
    • 1.Qh1?
      • threat
        • 2.Qh8#
      • 1...Kd8
        • 2.Qh8#
      • 1...Kf8
        • 2.Qh8#
      • 1...0-0-0!
  • Keys
    • 1.Qb4!
      • threat
        • 2.Qe7#
      • 1...Kd8
        • 2.Qf8#
      • 1...0-0-0
        • 2.Sa7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(d);N_SPINP(a),P-FLIGHT::QAB(A)
      • Refutation
        • K(d);N_SPINP(a),P-FLIGHT
    • Try
      • Q(A);N_PINP(a)
      • Threat
        • QAR(A)
      • Vars
        • K(d);P-FLIGHT::QAR(A)
        • K(d);P-FLIGHT::QAR2(A)
      • Refutation
        • K(d);0-0-0
    • Try
      • Q(A);N_PINP(a)
      • Threat
        • QAR(A)
      • Vars
        • K(d);P-FLIGHT::QAR(A)
        • K(d);P-FLIGHT::QAR2(A)
      • Refutation
        • K(d);0-0-0
    • Try
      • Q(A);N_PINP(a)
      • Threat
        • QAR(A)
      • Vars
        • K(d);P-FLIGHT::QAR(A)
        • K(d);P-FLIGHT::QAR2(A)
      • Refutation
        • K(d);0-0-0
  • Actual
    • Q(A);N_PINP(a)
    • Threat
      • QAR1(A)
    • Vars
      • K(d);P-FLIGHT::QAR2(A)
      • K(d);0-0-0::S(D)
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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).