MESON Chess Problem Database

Problem Display
PID: 6394 (2n3Q1/2p2pqP/2P2k1P/R6n/3N2pb/1K3Pp1/6P1/BB3R2 w - - 0 1)

Petrovic, Nenad

Die Schwalbe, 1929

2n3Q1/2p2pqP/2P2k1P/R6n/3N2pb/1K3Pp1/6P1/BB3R2

#2

12 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qxg8
      • 2.hxg8S#
    • 1...Sb6
      • 2.Qd8#
    • 1...Sd6
      • 2.Qd8#
    • 1...Sa7
      • 2.Qd8#
  • Keys
    • 1.Re1!
      • 1...Qxh6
        • 2.Sc2#
        • 2.Sb5#
        • 2.Sf5#
        • 2.Rf5#
      • 1...Qxh7
        • 2.Sc2#
        • 2.Sb5#
        • 2.Sf5#
      • 1...Qxg8
        • 2.hxg8S#
      • 1...gxf3
        • 2.Sxf3#
      • 1...Qf8
        • 2.Sc2#
        • 2.Sb5#
        • 2.Sf5#
        • 2.Rf5#
      • 1...Qh8
        • 2.Sc2#
        • 2.Sb5#
        • 2.Sf5#
        • 2.Rf5#
      • 1...Qg5
        • 2.Sf5#
      • 1...Qg6
        • 2.Sc2#
      • 1...Bg5
        • 2.Sb5#
      • 1...Sf4
        • 2.Qxg7#
      • 1...Sb6
        • 2.Qd8#
      • 1...Sd6
        • 2.Qd8#
      • 1...Sa7
        • 2.Qd8#
      • 1...Se7
        • 2.Se6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • Q(h);OGATE,XQ(L)::PXQ(h)=S
    • S(i);N_GUARD::QAB(L)
  • Actual
    • R(C);
    • Vars
      • Q(h);OGATE,XQ(L)::PXQ(h)=S
      • P(b);XP(F)::B(A)+S(G),XP(b)
      • Q(h);::B(A)+S(G)
      • B(c);SBLOCK::B(A)+S(G)
      • S(d);N_GUARD::QAB1(L),XQ(h)
      • S(i);N_GUARD::QAB(L)
      • S(i);SBLOCK::B(A)+S(G)
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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).