MESON Chess Problem Database

Problem Display
PID: 214507 (8/8/2pqp3/8/N1Pk1P2/3P4/1PKn1P2/3Q4 w - - 0 1)

Kanaga, CC

Brownson's Chess Journal, 1877

8/8/2pqp3/8/N1Pk1P2/3P4/1PKn1P2/3Q4

#2

8 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Qe2?
      • threat
        • 2.Qe3#
      • 1...Sxc4
        • 2.Qe4#
      • 1...Qe5
        • 2.Qxe5#
      • 1...Sf1
        • 2.Qe4#
      • 1...Qxf4!
    • 1.Qe1?
      • threat
        • 2.Qe3#
      • 1...Sxc4
        • 2.Qe4#
      • 1...Qe5
        • 2.Qxe5#
      • 1...Sf1
        • 2.Qc3#
        • 2.Qe4#
      • 1...Qxf4!
  • Keys
    • 1.Qxd2!
      • threat
        • 2.Qc3#
        • 2.Qe3#
      • 1...Qxf4
        • 2.Qc3#
        • 2.Qxf4#
      • 1...Qa3
        • 2.Qe3#
      • 1...Qb4
        • 2.Qe3#
      • 1...Qe5
        • 2.Qc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • S(a);N_GUARD,XP(G)::QAR1(A)
        • Q(d);N_GUARD::QAB1(A),XQ(d)
        • S(a);N_GUARD::QAR1(A)
      • Refutation
        • Q(d);XP(H)
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • S(a);N_GUARD,XP(G)::QAR1(A)
        • Q(d);N_GUARD::QAB1(A),XQ(d)
      • Refutation
        • Q(d);XP(H)
  • Actual
    • Q(A);XS(a)
    • Threat
      • DUALS(2)
    • Vars
      • Q(d);::QAB1(A)
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).