MESON Chess Problem Database

Problem Display
PID: 176025 (nB6/2r1Q1p1/5p2/1Ppp2N1/3kn3/NP1p2R1/8/K1R2bb1 w - - 0 1)

Weigel, Richard

Schach-Echo, 1937

nB6/2r1Q1p1/5p2/1Ppp2N1/3kn3/NP1p2R1/8/K1R2bb1

#2

9 + 11

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Ra7
      • 2.Se6#
    • 1...Rb7
      • 2.Se6#
    • 1...Rd7
      • 2.Se6#
    • 1...Rc8
      • 2.Se6#
    • 1...Be3
      • 2.Sf3#
    • 1...Sf2
      • 2.Sf3#
      • 2.Qe3#
    • 1...Sc3
      • 2.Sf3#
    • 1...Sxg3
      • 2.Sf3#
    • 1...Sd6
      • 2.Sf3#
    • 1...d2
      • 2.Sc2#
  • Tries
    • 1.Qe5+?
      • 1...fxe5
        • 2.Se6#
      • 1...Kxe5!
  • Keys
    • 1.b6!
      • threat
        • 2.Sb5#
      • 1...Ra7
        • 2.Se6#
      • 1...Sc3
        • 2.Sf3#
      • 1...Sd6
        • 2.Sf3#
      • 1...d2
        • 2.Sc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 5
  • Sets
    • R(i);P_PINS(C)::S(G)
    • R(i);::S(G)
    • B(b);SBLOCK::S(G)
    • S(e);::S(G)
    • S(e);XR(E)::S(G)
    • P(c);N_GUARD::S(C)
  • Tries
    • Try
      • Q(H);CHECK
      • Vars
        • P(h);SBLOCK,XQ(H)::S(G)
      • Refutation
        • K(d);P_SPINR(i),S_FLIGHT,XQ(H)
  • Actual
    • P(F);
    • Threat
      • S(C)
    • Vars
      • R(i);P_PINS(C)::S(G)
      • S(e);::S(G)
      • P(c);N_GUARD::S(C)
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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).