MESON Chess Problem Database

Problem Display
PID: 223240 (B1Q5/4pq2/1N6/B3pp2/2pp3n/3pknP1/4r2p/1N2RRbK w - - 0 1)

Spitz, William

Nashville Daily American, 1886

B1Q5/4pq2/1N6/B3pp2/2pp3n/3pknP1/4r2p/1N2RRbK

#2

9 + 13

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qh5
      • 2.Sxc4#
    • 1...Qg6
      • 2.Sxc4#
    • 1...Qe8
      • 2.Sxc4#
    • 1...Qf6
      • 2.Sxc4#
    • 1...Qg7
      • 2.Sxc4#
    • 1...Qh7
      • 2.Sxc4#
    • 1...Qf8
      • 2.Sxc4#
    • 1...Sd2
      • 2.Bxd2#
    • 1...Sg5
      • 2.Bd2#
    • 1...Sg2
      • 2.Rxf3#
    • 1...Sg6
      • 2.Rxf3#
    • 1...e6
      • 2.Sxc4#
  • Keys
    • 1.Qxf5!
      • threat
        • 2.Qe4#
      • 1...Qxf5
        • 2.Sxc4#
      • 1...Sxf5
        • 2.Rxf3#
      • 1...Qd5
        • 2.Sxd5#
      • 1...Qg6
        • 2.Sxc4#
        • 2.Sd5#
      • 1...Qh7
        • 2.Sxc4#
        • 2.Sd5#
      • 1...Sd2
        • 2.Bxd2#
      • 1...Sg5
        • 2.Bd2#
      • 1...e4
        • 2.Qxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 10
  • Sets
    • Q(m);N_GUARD::S(G),XP(g)
    • S(f);N_GUARD::B(F),XS(f)
    • S(f);N_GUARD::B(F)
    • S(i);N_GUARD::R1(C),XS(f)
    • P(l);S_CUTQ(m)::S(G),XP(g)
  • Actual
    • Q(I);XP(k)
    • Threat
      • QAR1(I)
    • Vars
      • Q(m);N_GUARD,XQ(I)::S(G),XP(g)
      • S(i);N_GUARD,XQ(I)::R1(C),XS(f)
      • Q(m);N_GUARD::S(G),XQ(m)
      • S(f);N_GUARD::B(F),XS(f)
      • S(f);N_GUARD::B(F)
      • P(j);::QAR1(I),XP(j)
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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).