MESON Chess Problem Database

Problem Display
PID: 218524 (rB6/3Bb2K/3nNp2/5k2/8/3Pn2P/1Q6/1R6 w - - 0 1)

Kidson, Henry Edwin

Leeds Mercury Weekly Supplement, 1881

(First published on Sat Jun 11 1881)

rB6/3Bb2K/3nNp2/5k2/8/3Pn2P/1Q6/1R6

#2

8 + 6

15239 Valois Notebooks 2020
6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sf1
      • 2.Rxf1#
    • 1...Sc2
      • 2.Rf1#
    • 1...Sec4
      • 2.Rf1#
    • 1...Sdc4
      • 2.Qf2#
    • 1...Sb5
      • 2.Qf2#
    • 1...Sb7
      • 2.Qf2#
    • 1...Sf7
      • 2.Qf2#
    • 1...Sc8
      • 2.Qf2#
    • 1...Se8
      • 2.Qf2#
  • Tries
    • 1.Qd4?
      • threat
        • 2.Qf4#
      • 1...Sg2
        • 2.Qc5#
        • 2.Qd5#
      • 1...Sd5
        • 2.Qxd5#
      • 1...Se4
        • 2.Qxe4#
        • 2.dxe4#
      • 1...Ra4!
    • 1.Qb5+?
      • 1...Sd5
        • 2.Qxd5#
      • 1...Sxb5!
  • Keys
    • 1.Qe2!
      • threat
        • 2.Qh5#
      • 1...Ke5
        • 2.Rb5#
      • 1...Sg4
        • 2.hxg4#
      • 1...Se4
        • 2.Qf3#
      • 1...Sf7
        • 2.Qf3#
        • 2.Qf2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 9
  • Sets
    • S(a);N_GUARD::R(A),XS(a)
    • S(a);N_GUARD::R(A)
    • S(c);::QAR(B)
  • Tries
    • Try
      • Q(B);
      • Threat
        • QAR1(B)
      • Vars
        • S(a);N_GUARD::QAR2(B),XS(a)
      • Refutation
        • R(f);
    • Try
      • Q(B);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::QAR2(B),XS(a)
      • Refutation
        • S(c);XQ(B)
  • Actual
    • Q(B);
    • Threat
      • QAR2(B)
    • Vars
      • K(b);P-FLIGHT,P_SPINS(a)::R(A)
      • S(a);OGATE::P(D),XS(a)
      • S(c);::QAR2(B)
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).