MESON Chess Problem Database

Problem Display
PID: 245734 (r2r4/p2bP1R1/2p1kN2/8/3p4/4q1B1/2n1RQ2/6KB w - - 0 1)

Wrobel, Marian

Brisbane Courier, 1932

r2r4/p2bP1R1/2p1kN2/8/3p4/4q1B1/2n1RQ2/6KB

#2

8 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qe4
      • 2.Rxe4#
    • 1...Bc8
      • 2.exd8S#
    • 1...c5
      • 2.Bd5#
  • Tries
    • 1.exd8Q?
      • threat
        • 2.Re7#
        • 2.Qe7#
        • 2.Qxd7#
      • 1...Qe5
        • 2.Qe7#
        • 2.Qxd7#
      • 1...Bc8
        • 2.Re7#
        • 2.Qe7#
        • 2.Qd6#
        • 2.Qe8#
        • 2.Qg8#
      • 1...Be8
        • 2.Re7#
        • 2.Qe7#
        • 2.Qd6#
      • 1...Rxd8!
  • Keys
    • 1.Sh7!
      • threat
        • 2.Sg5#
      • 1...Qe4
        • 2.Qf7#
      • 1...Qe5
        • 2.Qf6#
      • 1...Bc8
        • 2.exd8S#
      • 1...Be8
        • 2.Sf8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • Q(b);N_PINQ(D),OGATE::R(C),XQ(b)
    • B(g);S_CUTR(h)::PXR(i)=S
    • P(d);N_GUARD::B(B)
  • Tries
    • Try
      • P(G);XR(i)
      • Threat
        • DUALS(3)
      • Refutation
        • R(h);XQ(G)
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • Q(b);N_PINQ(D)::QAB1(D)
      • Q(b);N_PINQ(D)::QAR1(D)
      • B(g);S_CUTR(h)::PXR(i)=S
      • B(g);S_CUTR(i)::S(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).