MESON Chess Problem Database

Problem Display
PID: 116137 (1nrn2K1/1pN3bP/pPk4r/P2R4/2b5/1N3Q1B/5p2/2R2q2 w - - 0 1)

Goethart, Gerhardus Hendrik

Algemeen Handelsblad, 1919

1nrn2K1/1pN3bP/pPk4r/P2R4/2b5/1N3Q1B/5p2/2R2q2

#2

10 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qg2
      • 2.Rxc4#
    • 1...Qxh3
      • 2.Rxc4#
    • 1...Qd1
      • 2.Rxc4#
    • 1...Qe1
      • 2.Rxc4#
    • 1...Qg1
      • 2.Rxc4#
    • 1...Qh1
      • 2.Rxc4#
    • 1...Rf6
      • 2.Sd4#
    • 1...Bd4
      • 2.Sxd4#
    • 1...Bf8
      • 2.Sd4#
    • 1...Sd7
      • 2.Bxd7#
    • 1...Se6+
      • 2.Rd8#
    • 1...Sf7+
      • 2.Rd8#
  • Keys
    • 1.Qf8!
      • threat
        • 2.Qc5#
      • 1...Bxf8
        • 2.Sd4#
      • 1...Rd6
        • 2.Qxd6#
      • 1...Bd4
        • 2.Sxd4#
      • 1...Sd7
        • 2.Bxd7#
      • 1...Se6
        • 2.Rd6#
      • 1...Sf7
        • 2.Rc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 7
  • Sets
    • Q(a);N_GUARD::R(A),XB(c)
    • Q(a);N_GUARD,XB(D)::R(A),XB(c)
    • R(f);S_CUTB(h)::S(B)
    • B(h);N_GUARD::S(B),XB(h)
    • B(h);N_GUARD::S(B)
    • S(i);N_GUARD::B(D),XS(i)
    • S(k);CHECK,N_PINR(F)::QAB(C)+R(F)
  • Actual
    • Q(C);
    • Threat
      • QAR1(C)
    • Vars
      • B(h);N_GUARD,XQ(C)::S(B)
      • R(f);N_GUARD::QAR1(C),XR(f)
      • B(h);N_GUARD::S(B),XB(h)
      • S(i);N_GUARD::B(D),XS(i)
      • S(k);N_PINR(F),P_PINQ(C)::R1(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).