MESON Chess Problem Database

Problem Display
PID: 72923 (2N5/4rn2/2p1p1Q1/3k1Pp1/1Pn3N1/2P2P1B/3p3K/8 w - - 0 1)

de Jongh, Theodor

Tijdschrift vd NSB, 1933

2N5/4rn2/2p1p1Q1/3k1Pp1/1Pn3N1/2P2P1B/3p3K/8

#2

9 + 8

57 Tijdschrift vd KNSB 1936

SOLUTION

  • SOUND
  • Sets
    • 1...Ra7
      • 2.Qxe6#
    • 1...Rb7
      • 2.Qxe6#
    • 1...Rc7
      • 2.Qxe6#
    • 1...Rd7
      • 2.Qxe6#
    • 1...Sce5
      • 2.Se3#
    • 1...Scd6
      • 2.Sb6#
    • 1...Sfe5
      • 2.Sf6#
    • 1...Sfd6
      • 2.Sxe7#
    • 1...exf5
      • 2.Sxe7#
    • 1...e5
      • 2.Sf6#
      • 2.Sxe7#
  • Tries
    • 1.f6?
      • threat
        • 2.Qd3#
        • 2.Qe4#
      • 1...Sb2
        • 2.Qe4#
      • 1...Sce5
        • 2.Se3#
        • 2.Qe4#
      • 1...Scd6
        • 2.Sb6#
        • 2.Qd3#
      • 1...c5
        • 2.Qe4#
      • 1...d1Q
        • 2.Qe4#
      • 1...d1R
        • 2.Qe4#
      • 1...Sfe5
        • 2.Qe4#
      • 1...Sfd6
        • 2.Sxe7#
        • 2.Qd3#
      • 1...e5!
  • Keys
    • 1.fxe6!
      • threat
        • 2.Qe4#
      • 1...Rxe6
        • 2.Qd3#
      • 1...Sce5
        • 2.Se3#
      • 1...Scd6
        • 2.Sb6#
      • 1...Sfe5
        • 2.Sf6#
      • 1...Sfd6
        • 2.Sxe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 5
  • Sets
    • R(g);N_GUARD::QAB1(H),XP(f)
    • S(b);N_GUARD,SBLOCK::S(F)
    • S(b);N_GUARD,SBLOCK::S(I)
    • S(h);SBLOCK::S(F)
    • S(h);SBLOCK::S(I),XR(g)
    • P(f);XP(G)::S(I),XR(g)
  • Tries
    • Try
      • P(G);
      • Threat
        • DUALS(2)
      • Vars
        • S(b);::QAB1(H)
        • P(e);::QAB1(H)
        • P(a);::QAB1(H)
        • S(h);::QAB1(H)
      • Refutation
        • P(f);
  • Actual
    • P(G);XP(f)
    • Threat
      • QAB1(H)
    • Vars
      • R(g);SBLOCK,XP(G)::QAR2(H)
      • S(b);N_GUARD,SBLOCK::S(F)
      • S(b);N_GUARD,SBLOCK::S(I)
      • S(h);SBLOCK::S(F)
      • S(h);SBLOCK::S(I),XR(g)
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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).