MESON Chess Problem Database

Problem Display
PID: 159614 (3N2b1/b7/8/nppk1N2/7Q/6p1/2K5/B7 w - - 0 1)

Anonymous

BCPJ (May), 1919

3N2b1/b7/8/nppk1N2/7Q/6p1/2K5/B7

#2

5 + 7

SOLUTION

  • SOUND
  • Tries
    • 1.Qh1+?
      • 1...Kc4
        • 2.Qe4#
      • 1...g2!
    • 1.Qf4?
      • threat
        • 2.Se3#
        • 2.Se7#
      • 1...c4
        • 2.Qe5#
      • 1...Sc4
        • 2.Se7#
        • 2.Qf3#
      • 1...Sc6
        • 2.Se3#
      • 1...Bh7!
  • Keys
    • 1.Qe7!
      • threat
        • 2.Se3#
      • 1...Kc4
        • 2.Qe4#
      • 1...Be6
        • 2.Qxe6#
      • 1...Bh7
        • 2.Qe6#
      • 1...Sc4
        • 2.Qb7#
      • 1...c4
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(e);S_FLIGHT::QAR2(C)
      • Refutation
        • P(a);P_SPINP(a)
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • P(d);SBLOCK::QAR1(C)
        • S(b);::S(D)
      • Refutation
        • B(g);P_PINS(D)
  • Actual
    • Q(C);
    • Threat
      • S(D)
    • Vars
      • K(e);S_FLIGHT::QAR2(C)
      • B(g);N_GUARD::QAB1(C),XB(g)
      • B(g);N_GUARD,P_PINS(D)::QAB1(C)
      • S(b);N_GUARD,SBLOCK::QAB(C)
      • P(d);SBLOCK::QAR1(C)
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).