MESON Chess Problem Database

Problem Display
PID: 39967 (3NkN2/2P1P3/4n3/4R3/8/8/7Q/K7 w - - 0 1)

Pauly, Wolfgang

Deutsche Schachzeitung, 1901

3NkN2/2P1P3/4n3/4R3/8/8/7Q/K7

#2

7 + 2

1829 The Theory of Pawn Promotion 1912
4198 Wolfgang Pauly Challenge of a Legacy 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Sd4
      • 2.Qh5#
    • 1...Sc5
      • 2.Qh5#
    • 1...Sxc7
      • 2.Qh5#
  • Tries
    • 1.Qf4?
      • threat
        • 2.Qf7#
      • 1...Kxe7
        • 2.Rxe6#
      • 1...Sxd8
        • 2.cxd8Q#
        • 2.cxd8R#
        • 2.exd8Q#
        • 2.exd8S#
        • 2.exd8B#
        • 2.exd8R#
      • 1...Sxf8
        • 2.exf8S#
      • 1...Sg5
        • 2.Qa4#
      • 1...Sxf4!
    • 1.c8S?
      • threat
        • 2.Qh5#
      • 1...Sxd8
        • 2.Sd6#
      • 1...Sg5
        • 2.Sd6#
      • 1...Sf4
        • 2.Sd6#
      • 1...Sg7
        • 2.Sd6#
      • 1...Sxf8!
  • Keys
    • 1.Qh6!
      • 1...Kxe7
        • 2.Rxe6#
      • 1...Sxc7
        • 2.Qh5#
        • 2.Qc6#
        • 2.Qg6#
      • 1...Sxd8
        • 2.exd8S#
      • 1...Sxf8
        • 2.exf8S#
      • 1...Sd4
        • 2.Qh5#
        • 2.Qg6#
      • 1...Sf4
        • 2.Qc6#
      • 1...Sc5
        • 2.Qh5#
        • 2.Qg6#
      • 1...Sg5
        • 2.Qc6#
      • 1...Sg7
        • 2.Qc6#
        • 2.Qg6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 3
  • Sets
    • S(a);::QAB(B)
    • S(a);XP(D)::QAB(B)
  • Tries
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • K(b);OGATEB,P-FLIGHT,P_SPINS(a),XP(E)::R1(C),XS(a)
        • S(a);OGATE,XS(G)::PXS(a)=S
        • S(a);::QAB(B)
      • Refutation
        • S(a);XQ(B)
    • Try
      • P(D);
      • Threat
        • QAB(B)
      • Vars
        • S(a);XS(F)::S(D)
        • S(a);::S(D)
      • Refutation
        • S(a);XS(G)
  • Actual
    • Q(B);
    • Vars
      • K(b);OGATEB,P-FLIGHT,P_SPINS(a),XP(E)::R1(C),XS(a)
      • S(a);OGATE,XS(F)::PXS(a)=S
      • S(a);OGATE,XS(G)::PXS(a)=S
      • S(a);OGATE::QAB(B)
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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).