MESON Chess Problem Database

Problem Display
PID: 206609 (3R3r/6r1/p2N4/KPpBpP2/3kP3/1Q6/2pN4/6n1 w - - 0 1)

Sardella, Giuseppe

Best Problems, 2020

3R3r/6r1/p2N4/KPpBpP2/3kP3/1Q6/2pN4/6n1

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Se2
      • 2.Sf3#
    • 1...Sf3
      • 2.Sxf3#
    • 1...Sh3
      • 2.Sf3#
    • 1...axb5
      • 2.Sxb5#
  • Tries
    • 1.Sf1?
      • threat
        • 2.Qc4#
        • 2.Qe3#
      • 1...axb5
        • 2.Sxb5#
        • 2.Qe3#
      • 1...c4
        • 2.Qxc4#
        • 2.Qe3#
      • 1...c1B
        • 2.Qc4#
      • 1...c1R
        • 2.Qe3#
      • 1...Rg3
        • 2.Qc4#
      • 1...Rh3
        • 2.Qc4#
      • 1...c1Q!
    • 1.Bc4?
      • threat
        • 2.Qd3#
      • 1...Rg3
        • 2.Se8#
      • 1...Rh3
        • 2.Sf7#
      • 1...c1S!
  • Keys
    • 1.S6c4!
      • threat
        • 2.Qe3#
      • 1...Rg3
        • 2.Bg8#
      • 1...Rh3
        • 2.Bf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • S(a);N_GUARD::S(A)
    • S(a);N_GUARD::S(A),XS(a)
    • P(f);XP(E)::S(H),XP(f)
  • Tries
    • Try
      • S(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(b);::QAR1(B)
        • P(b);::QAB1(B)
        • R(g);::QAR1(B)
        • R(h);::QAR1(B)
      • Refutation
        • P(b);
    • Try
      • B(F);
      • Threat
        • QAR1(B)
      • Vars
        • R(g);N_GUARD::R(I)+S(H)
        • R(h);N_GUARD::R(I)+S(H)
      • Refutation
        • P(b);
  • Actual
    • S(H);
    • Threat
      • QAB1(B)
    • Vars
      • R(g);N_GUARD::R(I)+B(F)
      • R(h);N_GUARD::R(I)+B(F)
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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).