MESON Chess Problem Database

Problem Display
PID: 190251 (7r/3r2Q1/3R4/7R/p5b1/K1N2P2/1P6/k7 w - - 0 1)

Gatti, Daniele

Best Problems, 2019

7r/3r2Q1/3R4/7R/p5b1/K1N2P2/1P6/k7

#2

7 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Ra7
      • 2.Rd1#
    • 1...Rb7
      • 2.Rd1#
    • 1...Rc7
      • 2.Rd1#
    • 1...Re7
      • 2.Rd1#
    • 1...Rf7
      • 2.Rd1#
    • 1...Rxg7
      • 2.Rd1#
    • 1...Ra8
      • 2.Rh1#
    • 1...Rb8
      • 2.Rh1#
    • 1...Rc8
      • 2.Rh1#
    • 1...Rd8
      • 2.Rh1#
    • 1...Rf8
      • 2.Rh1#
    • 1...Rg8
      • 2.Rh1#
    • 1...Bxh5
      • 2.Qg1#
    • 1...Be6
      • 2.Qg1#
  • Tries
    • 1.Qf7?
      • threat
        • 2.Qa2#
      • 1...Rxf7
        • 2.Rd1#
      • 1...Be6!
  • Keys
    • 1.Qg8!
      • threat
        • 2.Qa2#
      • 1...Rxg8
        • 2.Rh1#
      • 1...Rf7
        • 2.Rd1#
      • 1...Be6
        • 2.Qg1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 11
  • Sets
    • R(d);N_GUARD::R(F)
    • R(d);N_GUARD,XQ(G)::R(F)
    • R(e);N_GUARD::R(E)
    • B(c);OGATE,XR(E)::QAR(G)
    • B(c);OGATE::QAR(G)
  • Tries
    • Try
      • Q(G);
      • Threat
        • QAR1(G)
      • Vars
        • R(d);N_GUARD,XQ(G)::R(F)
      • Refutation
        • B(c);
  • Actual
    • Q(G);
    • Threat
      • QAR1(G)
    • Vars
      • R(e);N_GUARD,XQ(G)::R(E)
      • R(d);N_GUARD::R(F)
      • B(c);OGATE::QAR(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).