MESON Chess Problem Database

Problem Display
PID: 143402 (2K3bq/2nN1pbr/6r1/8/4k1p1/1BP5/1NpPpRP1/Q7 w - - 0 1)

Ellerman, Arnoldo

Good Companions (July), 1917

2K3bq/2nN1pbr/6r1/8/4k1p1/1BP5/1NpPpRP1/Q7

#2

9 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Rf6
      • 2.Qa4#
    • 1...Be5
      • 2.Sc5#
    • 1...Sd5
      • 2.Bxc2#
    • 1...Se6
      • 2.Qa8#
    • 1...c1B
      • 2.Qb1#
    • 1...e1Q
      • 2.Qxe1#
    • 1...e1S
      • 2.Qxe1#
    • 1...e1B
      • 2.Qxe1#
    • 1...e1R
      • 2.Qxe1#
  • Keys
    • 1.g3!
      • threat
        • 2.Rf4#
      • 1...Rf6
        • 2.Qa4#
      • 1...Be5
        • 2.Sc5#
      • 1...Bh6
        • 2.Qh1#
      • 1...Sd5
        • 2.Bxc2#
      • 1...Se6
        • 2.Qa8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 5
  • Sets
    • R(e);S_CUTB(h)::QAR(A)
    • B(h);SBLOCK::S(H)
    • S(f);SBLOCK::B(F),XP(a)
    • S(f);N_GUARD,S_CUTR(e)::QAB(A)
    • P(a);OGATEB::QAB(A)
    • P(b);OGATEB::QAR(A),XQ(b)
    • P(b);OGATEB::QAR(A),XS(b)
    • P(b);OGATEB::QAR(A),XB(b)
    • P(b);OGATEB::QAR(A),XR(b)
  • Actual
    • P(E);
    • Threat
      • R1(D)
    • Vars
      • R(e);S_CUTB(h)::QAR(A)
      • B(h);SBLOCK::S(H)
      • B(h);S_CUTR(i)::QAB(A)
      • S(f);SBLOCK::B(F),XP(a)
      • S(f);N_GUARD,S_CUTR(e)::QAB(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).