MESON Chess Problem Database

Problem Display
PID: 119795 (r6B/1NpQ4/1p2pP2/4k1n1/4Pn1p/2p2p2/3PpN1K/b2r3b w - - 0 1)

Erlin, Konrad (AKA Erlinger, Konrad)

La Strategie, 1900

r6B/1NpQ4/1p2pP2/4k1n1/4Pn1p/2p2p2/3PpN1K/b2r3b

#2

8 + 14

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rb1
      • 2.d4#
    • 1...Rc1
      • 2.d4#
    • 1...Re1
      • 2.d4#
    • 1...Rf1
      • 2.d4#
    • 1...Rg1
      • 2.d4#
    • 1...Ra2
      • 2.f7#
    • 1...Ra3
      • 2.f7#
    • 1...Ra4
      • 2.f7#
    • 1...Ra5
      • 2.f7#
    • 1...Ra6
      • 2.f7#
    • 1...Ra7
      • 2.f7#
    • 1...c5
      • 2.Qd6#
    • 1...c6
      • 2.Qd6#
  • Keys
    • 1.Qa4!
      • threat
        • 2.Sg4#
      • 1...Rxa4
        • 2.f7#
      • 1...Sxe4
        • 2.Qxe4#
      • 1...Sg2
        • 2.Sd3#
      • 1...Sd3
        • 2.Sxd3#
      • 1...Sfh3
        • 2.Sd3#
      • 1...Sd5
        • 2.Sd3#
      • 1...Sh5
        • 2.Sd3#
      • 1...Sg6
        • 2.Sd3#
      • 1...Rg1
        • 2.d4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 11
  • Sets
    • R(b);N_GUARD::P(A)
    • R(n);N_GUARD::B(H)+P(E)
    • P(m);N_GUARD::QAB1(G)
  • Actual
    • Q(G);
    • Threat
      • S(B)
    • Vars
      • R(n);N_GUARD,XQ(G)::B(H)+P(E)
      • S(j);OGATE,XP(D)::QAR1(G),XS(j)
      • S(g);N_GUARD::S(B)
      • S(g);N_GUARD::S(B),XS(g)
      • R(b);N_GUARD::P(A)
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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).