MESON Chess Problem Database

Problem Display
PID: 270943 (2K5/2pNp3/1pk5/3nPN2/Pp1p1p1b/2p2n2/b4q2/6QB w - - 0 1)

Waidl, Dr Viktor

Die Schwalbe, 1931

2K5/2pNp3/1pk5/3nPN2/Pp1p1p1b/2p2n2/b4q2/6QB

#2

7 + 13

SOLUTION

  • SOUND
  • Sets
    • 1...Sg5
      • 2.Sxe7#
    • 1...Sf6
      • 2.Sxe7#
  • Tries
    • 1.Qg6+?
      • 1...Sf6
        • 2.Sxe7#
      • 1...e6
        • 2.Qxe6#
      • 1...Bf6!
  • Keys
    • 1.Qg8!
      • threat
        • 2.Qe6#
      • 1...Sg5
        • 2.Sxe7#
      • 1...Se3
        • 2.Sxd4#
      • 1...Sf6
        • 2.Sxe7#
      • 1...e6
        • 2.Qxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(d);P_SPINS(i),S_CUTB(h)::S(E),XP(m)
    • S(i);N_GUARD,P_SPINS(d),S_CUTB(h)::S(E),XP(m)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • S(i);P_SPINS(d)::S(E),XP(m)
        • P(m);P_SPINP(m)::QAR2(A),XP(m)
      • Refutation
        • B(h);P_SPINB(h)
  • Actual
    • Q(A);
    • Threat
      • QAR2(A)
    • Vars
      • S(d);P_SPINS(i),S_CUTB(h)::S(E),XP(m)
      • S(i);P_SPINS(d),S_CUTQ(b)::S(E),XP(f)
      • S(i);N_GUARD,P_SPINS(d),S_CUTB(h)::S(E),XP(m)
      • P(m);::QAR2(A),XP(m)
HTML5 logo

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).