MESON Chess Problem Database

Problem Display
PID: 165009 (1r2B3/p1N5/3p3R/knB5/2Qp4/p7/2n5/1N4K1 w - - 0 1)

Sardella, Giuseppe

Best Problems, 2017

1r2B3/p1N5/3p3R/knB5/2Qp4/p7/2n5/1N4K1

#2

7 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Ra8
      • 2.Qxb5#
    • 1...Rc8
      • 2.Qxb5#
    • 1...Rd8
      • 2.Qxb5#
    • 1...Rxe8
      • 2.Qxb5#
    • 1...Sa1
      • 2.Qb4#
    • 1...Se1
      • 2.Qb4#
    • 1...Se3
      • 2.Qb4#
    • 1...Sb4
      • 2.Qxb4#
    • 1...Sc3
      • 2.Qa6#
    • 1...Sxc7
      • 2.Qa4#
    • 1...dxc5
      • 2.Ra6#
    • 1...d5
      • 2.Ra6#
  • Tries
    • 1.Sc3?
      • threat
        • 2.Qa4#
      • 1...Sxc3
        • 2.Qa6#
      • 1...Sb4
        • 2.Qxb4#
      • 1...dxc3!
    • 1.Bxb5?
      • threat
        • 2.Qa4#
      • 1...Rxb5
        • 2.Qxb5#
      • 1...Sb4
        • 2.Qxb4#
      • 1...Rg8+!
    • 1.Rxd6?
      • threat
        • 2.Ra6#
      • 1...Sxd6
        • 2.Qa6#
        • 2.Qa4#
      • 1...Sxc7
        • 2.Qa4#
      • 1...Sb4
        • 2.Qxb4#
      • 1...a6
        • 2.Rxa6#
      • 1...Rb6!
  • Keys
    • 1.Sd2!
      • threat
        • 2.Sb3#
      • 1...Sxc7
        • 2.Qa4#
      • 1...Sb4
        • 2.Qxb4#
      • 1...Sa1
        • 2.Qb4#
      • 1...Sc3
        • 2.Qa6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 8
  • Sets
    • R(h);N_GUARD::QAR1(C),XS(e)
    • R(h);N_GUARD,XB(G)::QAR1(C),XS(e)
    • S(a);N_GUARD::QAB1(C)
    • S(a);N_GUARD::QAB1(C),XS(a)
    • S(e);OGATE::QAR1(C)
    • S(e);XS(F)::QAR1(C)
    • P(f);OGATE,XB(D)::R1(E)
    • P(f);OGATE::R1(E)
  • Tries
    • Try
      • S(A);
      • Threat
        • QAR1(C)
      • Vars
        • S(e);OGATE,XS(A)::QAR1(C)
        • S(a);N_GUARD::QAB1(C),XS(a)
      • Refutation
        • P(c);XS(A)
    • Try
      • B(G);XS(e)
      • Threat
        • QAR1(C)
      • Vars
        • R(h);OGATE,XB(G)::QAR1(C),XR(h)
        • S(a);N_GUARD::QAB1(C),XS(a)
      • Refutation
        • R(h);CHECK
    • Try
      • R(E);XP(f)
      • Threat
        • R1(E)
      • Vars
        • S(e);XS(F)::QAR1(C)
        • S(a);N_GUARD::QAB1(C),XS(a)
        • P(g);::R1(E),XP(g)
      • Refutation
        • R(h);
  • Actual
    • S(A);
    • Threat
      • S(A)
    • Vars
      • S(e);XS(F)::QAR1(C)
      • S(a);N_GUARD::QAB1(C),XS(a)
      • S(a);N_GUARD::QAB1(C)
      • S(e);OGATE::QAR1(C)
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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).