MESON Chess Problem Database

Problem Display
PID: 224566 (3N1b2/2K1p3/2p2p2/4k2r/1p3p2/3QpBn1/8/8 w - - 0 1)

Horne, C

The Field, 1894

(First published on Sat Dec 8 1894)

3N1b2/2K1p3/2p2p2/4k2r/1p3p2/3QpBn1/8/8

#2

4 + 10

15239 Valois Notebooks 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sf1
      • 2.Qe4#
    • 1...Sh1
      • 2.Qe4#
    • 1...Se2
      • 2.Qe4#
    • 1...Se4
      • 2.Qxe4#
    • 1...Sf5
      • 2.Qe4#
    • 1...c5
      • 2.Qd5#
    • 1...e6
      • 2.Sxc6#
      • 2.Sf7#
  • Tries
    • 1.Kxc6?
      • threat
        • 2.Qd5#
      • 1...e6
        • 2.Sf7#
      • 1...f5!
    • 1.Kd7?
      • threat
        • 2.Sxc6#
        • 2.Sf7#
      • 1...Se4
        • 2.Qxe4#
      • 1...Rh7
        • 2.Sxc6#
      • 1...c5
        • 2.Sc6#
        • 2.Sf7#
        • 2.Qd5#
      • 1...f5!
  • Keys
    • 1.Qc2!
      • threat
        • 2.Qc5#
      • 1...Kd4
        • 2.Sxc6#
      • 1...Se4
        • 2.Qxe4#
      • 1...f5
        • 2.Qb2#
      • 1...c5
        • 2.Qxc5#
      • 1...e6
        • 2.Sxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • S(b);N_GUARD::QAR1(A)
    • S(b);N_GUARD::QAR1(A),XS(b)
    • P(g);N_GUARD::QAR1(A)
  • Tries
    • Try
      • K(C);P-FLIGHT,XP(g)
      • Threat
        • QAR1(A)
      • Vars
        • P(i);SBLOCK::S(D)
      • Refutation
        • P(h);
    • Try
      • K(C);P-FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • S(b);N_GUARD::QAR1(A),XS(b)
        • R(f);::S(D),XP(g)
      • Refutation
        • P(h);
  • Actual
    • Q(A);
    • Threat
      • QAR2(A)
    • Vars
      • K(e);S_FLIGHT::S(D),XP(g)
      • S(b);N_GUARD::QAR1(A),XS(b)
      • P(h);SBLOCK::QAB(A)
      • P(g);::QAR2(A),XP(g)
      • P(i);SBLOCK::S(D),XP(g)
HTML5 logo

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).