MESON Chess Problem Database

Problem Display
PID: 157528 (8/2r1p3/1b1p2KB/pN1R4/4k1p1/1pr5/8/qb1Qn3 w - - 0 1)

Ellerman, Arnoldo

Brisbane Courier, 1919

8/2r1p3/1b1p2KB/pN1R4/4k1p1/1pr5/8/qb1Qn3

#2

5 + 12

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Sd3
      • 2.Qh1#
    • 1...e5
      • 2.Sxd6#
    • 1...e6
      • 2.Sxd6#
  • Keys
    • 1.Rf5!
      • threat
        • 2.Qd5#
      • 1...Rd3
        • 2.Qxg4#
      • 1...R3c5
        • 2.Qe2#
      • 1...R7c5
        • 2.Qd4#
      • 1...Bd3
        • 2.Qxg4#
      • 1...Bd4
        • 2.Qxd4#
      • 1...Sd3
        • 2.Qh1#
      • 1...d5
        • 2.Qxd5#
      • 1...e5
        • 2.Sxd6#
      • 1...e6
        • 2.Sxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • S(c);OGATE::QAB(A)
    • P(l);N_GUARD::S(B),XP(j)
  • Actual
    • R(C);
    • Threat
      • QAB1(A)
    • Vars
      • R(e);SBLOCK::QAR2(A),XP(g)
      • R(e);N_GUARD,S_CUTB(i)::QAR2(A)
      • R(k);S_CUTB(i)::QAR1(A)
      • B(b);SBLOCK::QAR2(A),XP(g)
      • B(i);N_GUARD::QAR1(A),XB(i)
      • S(c);OGATE,SBLOCK::QAB(A)
      • P(j);::QAB1(A),XP(j)
      • P(l);N_GUARD::S(B),XP(j)
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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).