MESON Chess Problem Database

Problem Display
PID: 245516 (1B6/6R1/8/8/8/1Q6/6n1/1K2n2k w - - 0 1)

Shumarin, Vladimir Pavlovich

Kudesnik, 2003

1B6/6R1/8/8/8/1Q6/6n1/1K2n2k

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sh4
      • 2.Qh3#
  • Tries
    • 1.Qd1?
      • 1...Kg1
        • 2.Qxe1#
      • 1...Se3
        • 2.Qh5#
      • 1...Sh4
        • 2.Qxe1#
      • 1...Sf4!
  • Keys
    • 1.Qg3!
      • threat
        • 2.Qh2#
      • 1...Kg1
        • 2.Qxe1#
      • 1...Sf3
        • 2.Qxg2#
      • 1...Sf4
        • 2.Qg1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • S(c);::QAR2(B)
  • Tries
    • Try
      • Q(B);P_PINS(a)
      • Vars
        • K(b);P-FLIGHT::QAR2(B),XS(a)
        • S(c);N_GUARD::QAR(B)
        • S(c);N_GUARD::QAR(B),XS(a)
      • Refutation
        • S(c);
  • Actual
    • Q(B);
    • Threat
      • QAR1(B)
    • Vars
      • K(b);P-FLIGHT,P_SPINS(c)::QAR2(B),XS(a)
      • S(a);N_GUARD::QAB1(B),XS(c)
      • S(c);OGATE::QAR1(B)
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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).