MESON Chess Problem Database

Problem Display
PID: 198200 (2R5/1p6/2N5/1p1kB3/1Pr3QK/2n1p2n/Bq1p2b1/6r1 w - - 0 1)

Niemeijer, Meindert

Eskilstuna Kuriren, 1920

2R5/1p6/2N5/1p1kB3/1Pr3QK/2n1p2n/Bq1p2b1/6r1

#2

7 + 11

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Be4
      • 2.Qd7#
    • 1...Se4
      • 2.Qg8#
  • Tries
    • 1.Bh2?
      • threat
        • 2.Se7#
      • 1...Qxb4
        • 2.Sxb4#
      • 1...bxc6
        • 2.Rd8#
      • 1...Be4
        • 2.Qd7#
      • 1...Se4
        • 2.Qg8#
      • 1...Sf4!
    • 1.Bg3?
      • threat
        • 2.Se7#
      • 1...Qxb4
        • 2.Sxb4#
      • 1...bxc6
        • 2.Rd8#
      • 1...Be4
        • 2.Qd7#
        • 2.Qg8#
      • 1...Se4
        • 2.Qg8#
      • 1...Sf4!
  • Keys
    • 1.Bb8!
      • threat
        • 2.Se7#
      • 1...Qxb4
        • 2.Sxb4#
      • 1...bxc6
        • 2.Rd8#
      • 1...Sf4
        • 2.Qf5#
      • 1...Be4
        • 2.Qd7#
      • 1...Se4
        • 2.Qg8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(d);N_PINQ(C),SBLOCK::QAR2(C)
    • S(e);N_PINQ(C),SBLOCK::QAB(C)
  • Tries
    • Try
      • B(E);
      • Threat
        • S(F)
      • Vars
        • Q(b);XP(B)::S(F),XQ(b)
        • P(k);SBLOCK,XS(F)::R(G)
        • B(d);N_PINQ(C),SBLOCK::QAR2(C)
        • S(e);N_PINQ(C),SBLOCK::QAB(C)
      • Refutation
        • S(g);N_PINQ(C)
    • Try
      • B(E);
      • Threat
        • S(F)
      • Vars
        • Q(b);XP(B)::S(F),XQ(b)
        • P(k);SBLOCK,XS(F)::R(G)
        • S(e);N_PINQ(C),SBLOCK::QAB(C)
      • Refutation
        • S(g);N_PINQ(C)
  • Actual
    • B(E);
    • Threat
      • S(F)
    • Vars
      • Q(b);XP(B)::S(F),XQ(b)
      • P(k);SBLOCK,XS(F)::R(G)
      • S(g);N_PINQ(C)::QAR2(C)
      • B(d);N_PINQ(C),SBLOCK::QAR2(C)
      • S(e);N_PINQ(C),SBLOCK::QAB(C)
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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).