MESON Chess Problem Database

Problem Display
PID: 223222 (2r1rRB1/P1pQ1qbp/KR1N2bB/2p1k1p1/2pp1NPn/3P1P2/8/8 w - - 0 1)

Spitz, William

Nashville Daily American, 1886

2r1rRB1/P1pQ1qbp/KR1N2bB/2p1k1p1/2pp1NPn/3P1P2/8/8

#2

12 + 13

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qd5
      • 2.Bxg7#
      • 2.Qxg7#
    • 1...Qxf4
      • 2.Sxc4#
    • 1...Qxd7
      • 2.Sxc4#
    • 1...Qe7
      • 2.Sxc4#
    • 1...cxd6
      • 2.Qxd6#
  • Keys
    • 1.Sd5!
      • threat
        • 2.Sxc4#
      • 1...Kxd5
        • 2.Sxc4#
        • 2.Sxf7#
      • 1...Qxd5
        • 2.Bxg7#
        • 2.Qxg7#
      • 1...Bxd3
        • 2.Sxf7#
      • 1...cxd3
        • 2.Sc4#
      • 1...cxd6
        • 2.Qxd6#
      • 1...c3
        • 2.Sc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • Q(i);N_GUARD,XS(C)::S(G),XP(a)
    • Q(i);N_GUARD,XQ(J)::S(G),XP(a)
    • Q(i);N_GUARD::S(G),XP(a)
    • P(h);OGATE,XS(G)::QAB1(J),XP(h)
  • Actual
    • S(C);
    • Threat
      • S(G),XP(a)
    • Vars
      • B(g);N_GUARD,XP(A)::S(G),XQ(i)
      • P(a);XP(A)::S(G)
      • P(h);OGATE,XS(G)::QAB1(J),XP(h)
      • P(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).