MESON Chess Problem Database

Problem Display
PID: 169861 (2nQ1B2/2rb1N1K/P1k1P1N1/Pp5R/n7/1p1p3p/8/1qbR1B2 w - - 0 1)

Ellerman, Arnoldo

La Marseillaise, 1945

2nQ1B2/2rb1N1K/P1k1P1N1/Pp5R/n7/1p1p3p/8/1qbR1B2

#2

11 + 11

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Bxe6
      • 2.Se5#
    • 1...Be8
      • 2.Se5#
      • 2.Qd5#
    • 1...Sb2
      • 2.Rc5#
    • 1...Sc3
      • 2.Rc5#
    • 1...Sc5
      • 2.Rxc5#
    • 1...Sab6
      • 2.Rc5#
    • 1...Scb6
      • 2.Se7#
    • 1...Sd6
      • 2.Se7#
    • 1...Sa7
      • 2.Se7#
    • 1...Se7
      • 2.Sxe7#
    • 1...d2
      • 2.Bxb5#
    • 1...h2
      • 2.Bg2#
  • Keys
    • 1.Be2!
      • threat
        • 2.Bf3#
      • 1...Bxe6
        • 2.Se5#
      • 1...dxe2
        • 2.Se5#
      • 1...Sc3
        • 2.Rc5#
      • 1...Sc5
        • 2.Rxc5#
      • 1...Sab6
        • 2.Rc5#
      • 1...Scb6
        • 2.Se7#
      • 1...Sd6
        • 2.Se7#
      • 1...Se7
        • 2.Sxe7#
      • 1...d2
        • 2.Bxb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • B(j);P_PINS(H),XP(F)::S(G)
    • S(f);N_GUARD::R1(D)
    • S(f);N_GUARD::R1(D),XS(f)
    • S(k);N_GUARD::S(G)
    • S(k);N_GUARD::S(G),XS(k)
    • P(d);OGATE,P_PINS(G)::B(B),XP(g)
    • P(e);N_GUARD::B(B)
  • Actual
    • B(B);
    • Threat
      • B(B)
    • Vars
      • B(j);P_PINS(H),XP(F)::S(G)
      • P(d);P_PINS(G),XB(B)::S(H)
      • S(f);N_GUARD::R1(D)
      • S(f);N_GUARD::R1(D),XS(f)
      • S(k);N_GUARD::S(G)
      • S(k);N_GUARD::S(G),XS(k)
      • P(d);OGATE,P_PINS(G)::B(B),XP(g)
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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).