MESON Chess Problem Database

Problem Display
PID: 101527 (R1NkB3/3P4/3P3K/6NQ/1r5p/r7/1p6/2b4b w - - 0 1)

Guidelli, Giorgio

5th Prize=, Good Companions (January), 1917

R1NkB3/3P4/3P3K/6NQ/1r5p/r7/1p6/2b4b

#2

8 + 7

6490 yacpdb 2009
14868 Pirnie Collection 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Re3
      • 2.Sf7#
    • 1...Rf3
      • 2.Sb6#
    • 1...Re4
      • 2.Sa7#
    • 1...Rf4
      • 2.Se6#
    • 1...Bxg5+
      • 2.Qxg5#
  • Tries
    • 1.Sa7+?
      • 1...Rb8
        • 2.Rxb8#
      • 1...Bxa8!
  • Keys
    • 1.Qg6!
      • threat
        • 2.Qf6#
      • 1...Bxg5+
        • 2.Qxg5#
      • 1...Re3
        • 2.Sf7#
      • 1...Rf3
        • 2.Sb6#
      • 1...Re4
        • 2.Sa7#
      • 1...Rf4
        • 2.Se6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • R(d);N_PINS(A)::S(A)
    • R(d);N_GUARD,S_CUTB(b)::R(F)+S(G)
    • R(e);N_GUARD,S_CUTB(b)::R(F)+S(G)
    • R(e);N_PINS(A)::S(A)
    • B(a);CHECK,OGATE,XS(A)::QAB(B),XB(a)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • R(e);N_GUARD,P_SPINR(e)::R(F),XR(e)
      • Refutation
        • B(b);XR(F)
  • Actual
    • Q(B);
    • Threat
      • QAB(B)
    • Vars
      • B(a);CHECK,OGATE,XS(A)::QAB(B),XB(a)
      • R(d);N_PINS(A)::S(A)
      • R(d);N_GUARD,S_CUTB(b)::R(F)+S(G)
      • R(e);N_GUARD,S_CUTB(b)::R(F)+S(G)
      • R(e);N_PINS(A)::S(A)
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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).