MESON Chess Problem Database

Problem Display
PID: 204447 (5N2/4pR2/2bqrn1B/3n1k2/1pQ3N1/2pP4/4P1Pp/1B5K w - - 0 1)

van Dijk, Johannes

Algemeen Handelsblad, 1925

5N2/4pR2/2bqrn1B/3n1k2/1pQ3N1/2pP4/4P1Pp/1B5K

#2

10 + 10

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Re4
      • 2.Qxe4#
  • Tries
    • 1.e4+?
      • 1...Rxe4
        • 2.Qxe4#
      • 1...Kxg4!
  • Keys
    • 1.Se5!
      • threat
        • 2.Qe4#
      • 1...Kxe5
        • 2.d4#
      • 1...Qxe5
        • 2.g4#
      • 1...Rxe5
        • 2.g4#
      • 1...Se3
        • 2.Qf4#
      • 1...Sf4
        • 2.Qxf4#
      • 1...Sb6
        • 2.Qf4#
      • 1...Sc7
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 1
  • Sets
    • R(h);N_GUARD::QAB1(F),XR(h)
  • Tries
    • Try
      • P(C);CHECK
      • Vars
        • R(h);OGATE,XP(C)::QAB1(F),XR(h)
      • Refutation
        • K(e);N_SPINS(i),S_FLIGHT,XS(G)
  • Actual
    • S(G);
    • Threat
      • QAB1(F)
    • Vars
      • K(e);N_SPINS(i),P-FLIGHT,XS(G)::P(E)
      • Q(g);SBLOCK,XS(G)::P(D)
      • R(h);SBLOCK,XS(G)::P(D)
      • S(d);N_GUARD,P_PINP(D)::QAR1(F)
      • S(d);N_GUARD,P_PINP(D)::QAR1(F),XS(d)
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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).