MESON Chess Problem Database

Problem Display
PID: 265254 (3K1R2/3RB1n1/2p1p3/2N1k3/8/2pprb1p/4r2q/b2Q4 w - - 0 1)

Schonholzer, Andreas

Schweizerische Schachzeitung, 2014

3K1R2/3RB1n1/2p1p3/2N1k3/8/2pprb1p/4r2q/b2Q4

#2

6 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Re4
      • 2.Sxd3#
    • 1...c2
      • 2.Qxa1#
  • Tries
    • 1.Sxd3+?
      • 1...Ke4
        • 2.Qa4#
      • 1...Rxd3!
  • Keys
    • 1.Qa4!
      • threat
        • 2.Qd4#
      • 1...Qf4
        • 2.Qxf4#
      • 1...Re4
        • 2.Sxd3#
      • 1...Bd5
        • 2.Bd6#
      • 1...Sf5
        • 2.Bf6#
      • 1...c2
        • 2.Qxa1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(f);N_GUARD,SBLOCK::S(B),XP(e)
    • P(d);OGATEB::QAB(A),XB(a)
  • Tries
    • Try
      • S(B);CHECK,XP(e)
      • Vars
        • K(i);P-FLIGHT,S_CUTR(f)::QAR(A)
      • Refutation
        • R(f);P_PINR(C),XS(B)
  • Actual
    • Q(A);
    • Threat
      • QAB1(A)
    • Vars
      • Q(c);N_GUARD::QAB1(A),XQ(c)
      • R(f);N_GUARD::S(B),XP(e)
      • B(g);SBLOCK::B(D)
      • S(l);SBLOCK::B(D)
      • P(d);OGATEB::QAB(A),XB(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).