MESON Chess Problem Database

Problem Display
PID: 173657 (BBq1b3/3QP2K/3N2pn/R7/1r3k2/b3NP2/2nP2RP/6r1 w - - 0 1)

Boros, Sandor

Comm., Il Problema, 1933

BBq1b3/3QP2K/3N2pn/R7/1r3k2/b3NP2/2nP2RP/6r1

#2

12 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rxg2
      • 2.Sxg2#
  • Tries
    • 1.Sb5+?
      • 1...Qc7
        • 2.Bxc7#
        • 2.Qxc7#
      • 1...Qxb8!
  • Keys
    • 1.Qh3!
      • threat
        • 2.Qg3#
      • 1...Qxh3
        • 2.Sb5#
      • 1...Rxg2
        • 2.Sxg2#
      • 1...Qg4
        • 2.Sb7#
      • 1...Sf5
        • 2.Qg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(a);XR(B)::S(D),XR(a)
  • Tries
    • Try
      • S(G);CHECK
      • Refutation
        • Q(h);XB(L)
  • Actual
    • Q(H);
    • Threat
      • QAB1(H)
    • Vars
      • Q(h);N_GUARD,XQ(H)::B(L)+S(G)
      • R(a);XR(B)::S(D),XR(a)
      • Q(h);N_GUARD::B(L)+S(G)
      • S(g);N_GUARD,S_CUTQ(h)::QAR1(H)
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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).