MESON Chess Problem Database

Problem Display
PID: 238104 (7q/1NNn4/6Q1/3P1B2/n1pk4/1b6/4R3/K5b1 w - - 0 1)

Hermanson, Halvar

Revista Romana de Sah, 1958

7q/1NNn4/6Q1/3P1B2/n1pk4/1b6/4R3/K5b1

#2

7 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sc3
      • 2.Qxg1#
    • 1...c3
      • 2.Qg4#
  • Tries
    • 1.Qe6?
      • threat
        • 2.Sb5#
      • 1...Sc3
        • 2.Rd2#
      • 1...c3
        • 2.Qe4#
      • 1...Kc3!
  • Keys
    • 1.Qd6!
      • threat
        • 2.Sb5#
      • 1...Kc3
        • 2.Sb5#
      • 1...Sc3
        • 2.Se6#
      • 1...c3
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(c);SBLOCK::QAB(E),XB(a)
    • P(d);SBLOCK::QAR(E)
  • Tries
    • Try
      • Q(E);
      • Threat
        • S(G)
      • Vars
        • S(c);SBLOCK::R(B)
        • P(d);SBLOCK::QAR1(E)
      • Refutation
        • K(e);S_FLIGHT
  • Actual
    • Q(E);
    • Threat
      • S(G)
    • Vars
      • K(e);S_FLIGHT::S(G)
      • S(c);SBLOCK::S(G)
      • P(d);SBLOCK::QAR2(E)
HTML5 logo

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).