MESON Chess Problem Database

Problem Display
PID: 239895 (8/3N4/3r1p2/1ppb3P/3nk1BR/1pQpP3/1r5p/3N3K w - - 0 1)

Ellerman, Arnoldo

Parallele 50, 1947

8/3N4/3r1p2/1ppb3P/3nk1BR/1pQpP3/1r5p/3N3K

#2

8 + 11

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sc2
      • 2.Sxc5#
    • 1...Se2
      • 2.Sxc5#
    • 1...Sf3
      • 2.Sxc5#
    • 1...Sf5
      • 2.Sxc5#
    • 1...Sc6
      • 2.Sxc5#
    • 1...Se6
      • 2.Sxf6#
    • 1...d2
      • 2.Sf2#
    • 1...c4
      • 2.Qxd4#
  • Keys
    • 1.Qxc5!
      • threat
        • 2.Qxd4#
      • 1...Bc4
        • 2.Be2#
      • 1...Bc6
        • 2.Be2#
      • 1...Be6
        • 2.Sxf6#
      • 1...Bb7
        • 2.Be2#
      • 1...Bf7
        • 2.Be2#
      • 1...Ba8
        • 2.Be2#
      • 1...Bg8
        • 2.Be2#
      • 1...Sc2
        • 2.Sf2#
        • 2.Sc3#
      • 1...Se2
        • 2.Sf2#
      • 1...Sf3
        • 2.Sc3#
      • 1...Sf5
        • 2.Sc3#
      • 1...Sc6
        • 2.Sc3#
      • 1...Se6
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 5
    • ADDED MATES = 7
    • REMOVED MATES = 3
  • Sets
    • S(e);::S(H),XP(h)
    • S(e);S_CUTR(j)::S(H),XP(k)
    • P(d);S_CUTR(a)::S(A)
    • P(h);N_GUARD::QAR1(C),XS(e)
  • Actual
    • Q(C);XP(h)
    • Threat
      • QAR1(C),XS(e)
    • Vars
      • B(i);::R(F)+B(E)
      • B(i);S_CUTR(j)::S(H),XP(k)
      • S(e);S_CUTR(a)::S(A)
      • S(e);::S(A)
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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).