MESON Chess Problem Database

Problem Display
PID: 33187 (8/8/8/2K5/2n1p3/3k4/2R2Q2/6n1 w - - 0 1)

Lazard, Frederic

Pradignat, Emile Leonard

Shakhmatny Zhurnal, 1895

8/8/8/2K5/2n1p3/3k4/2R2Q2/6n1

#2

3 + 4

119 Tidskrift for Schack 1967
6490 yacpdb 2009
5454 Near Snap 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Se2
      • 2.Qxe2#
    • 1...Sf3
      • 2.Qe2#
    • 1...Sh3
      • 2.Qe2#
    • 1...Sb2
      • 2.Qd2#
    • 1...Sd2
      • 2.Qxd2#
    • 1...Sa3
      • 2.Qd2#
    • 1...Se3
      • 2.Qd2#
    • 1...Sa5
      • 2.Qd2#
    • 1...Se5
      • 2.Qd2#
    • 1...Sb6
      • 2.Qd2#
    • 1...Sd6
      • 2.Qd2#
    • 1...e3
      • 2.Qf5#
  • Tries
    • 1.Qg2?
      • 1...Se2
        • 2.Qxe2#
      • 1...Sd2
        • 2.Qxd2#
      • 1...Sf3
        • 2.Qe2#
      • 1...Sh3
        • 2.Qe2#
      • 1...Sb2
        • 2.Qd2#
      • 1...Sa3
        • 2.Qd2#
      • 1...Se3
        • 2.Qd2#
      • 1...Sa5
        • 2.Qd2#
      • 1...Se5
        • 2.Qd2#
      • 1...Sb6
        • 2.Qd2#
      • 1...Sd6
        • 2.Qd2#
      • 1...e3
        • 2.Qg6#
      • 1...Ke3!
  • Keys
    • 1.Qh2!
      • 1...Ke3
        • 2.Rc3#
      • 1...Se2
        • 2.Qxe2#
      • 1...Sd2
        • 2.Qxd2#
      • 1...Sf3
        • 2.Qe2#
      • 1...Sh3
        • 2.Qe2#
      • 1...Sb2
        • 2.Qd2#
      • 1...Sa3
        • 2.Qd2#
      • 1...Se3
        • 2.Qd2#
      • 1...Sa5
        • 2.Qd2#
      • 1...Se5
        • 2.Qd2#
      • 1...Sb6
        • 2.Qd2#
      • 1...Sd6
        • 2.Qd2#
      • 1...e3
        • 2.Qh7#

This anticipates 205495(1925)

This is a version of 4973

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::QAB1(B),XS(a)
    • S(a);N_GUARD::QAB1(B)
    • S(c);N_GUARD::QAR1(B)
    • S(c);N_GUARD::QAR1(B),XS(c)
    • P(d);OGATEB,SBLOCK::QAB(B)
  • Tries
    • Try
      • Q(B);
      • Vars
        • S(a);N_GUARD::QAB1(B),XS(a)
        • S(c);N_GUARD::QAR1(B),XS(c)
        • S(a);N_GUARD::QAB1(B)
        • S(c);N_GUARD::QAR1(B)
        • P(d);OGATEB,SBLOCK::QAB(B)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • Q(B);
    • Vars
      • K(b);P-FLIGHT::R(A)
      • S(a);N_GUARD::QAB1(B),XS(a)
      • S(c);N_GUARD::QAR1(B),XS(c)
      • S(a);N_GUARD::QAB1(B)
      • S(c);N_GUARD::QAR1(B)
      • P(d);OGATEB,SBLOCK::QAB(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).