MESON Chess Problem Database

Problem Display
PID: 249437 (8/K1p3r1/P1Q2N2/1Np3r1/2k5/P1pbq3/2P2B2/3R4 w - - 0 1)

Weisser, Berthold

Die Schwalbe, 1929

8/K1p3r1/P1Q2N2/1Np3r1/2k5/P1pbq3/2P2B2/3R4

#2

9 + 8

SOLUTION

  • SOUND
  • Tries
    • 1.Sd6+?
      • 1...Kd4
        • 2.Qe4#
      • 1...cxd6+!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Qa4#
      • 1...Kxd4
        • 2.Qe4#
      • 1...Bxc2
        • 2.Qb5#
      • 1...Qe8
        • 2.cxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(d);N_SPINP(e),P-FLIGHT,P_SPINB(b),P_SPINQ(c)::QAR1(G)
      • Refutation
        • P(g);CHECK,XS(E)
  • Actual
    • S(E);
    • Threat
      • QAR2(G)
    • Vars
      • K(d);N_SPINP(e),OGATEB,P-FLIGHT,P_SPINB(b),P_SPINQ(c),XS(E)::QAR1(G)
      • B(b);XP(B)::QAB1(G)
      • Q(c);N_GUARD::P(B),XB(b)
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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).