MESON Chess Problem Database

Problem Display
PID: 251862 (6Q1/4b3/1rp2p1B/RNp2k2/2R2Pp1/K2p1rp1/1p3q2/1B6 w - - 0 1)

Weisser, Berthold

Die Schwalbe, 1930

6Q1/4b3/1rp2p1B/RNp2k2/2R2Pp1/K2p1rp1/1p3q2/1B6

#2

8 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Bd6
      • 2.Sxd6#
    • 1...Bd8
      • 2.Sd6#
  • Tries
    • 1.Sd4+?
      • 1...Ke4
        • 2.Qe6#
      • 1...Qxd4!
  • Keys
    • 1.Re4!
      • threat
        • 2.Qh7#
      • 1...d2+
        • 2.Re3#
      • 1...c4+
        • 2.Sd6#
      • 1...Kxe4
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • B(l);N_GUARD::S(F),XB(l)
    • B(l);N_GUARD::S(F)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(h);N_GUARD,S_FLIGHT::QAR2(H)
      • Refutation
        • Q(b);XS(F)
  • Actual
    • R(C);N_PINP(c)
    • Threat
      • QAB(H)
    • Vars
      • P(c);CHECK,OGATEB::B(A)+R(C)
      • P(g);CHECK::R(E)+S(F),DCHECK
      • K(h);N_GUARD,P_SPINP(c),S_FLIGHT,XR(C)::QAR2(H)
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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).