MESON Chess Problem Database

Problem Display
PID: 55118 (5N2/3pB3/K5P1/3k3r/B4Q2/7p/1N2p3/2n4q w - - 0 1)

Shire, David J

Troll, 1991

5N2/3pB3/K5P1/3k3r/B4Q2/7p/1N2p3/2n4q

#2

7 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Qe4
      • 2.Qd6#
    • 1...Re5
      • 2.Qc4#
  • Tries
    • 1.Bc2?
      • threat
        • 2.Qd6#
      • 1...Kc6
        • 2.Qd6#
      • 1...d6
        • 2.Qxd6#
      • 1...Qh2
        • 2.Qe4#
      • 1...Re5
        • 2.Qc4#
      • 1...Sd3!
    • 1.Bb3+?
      • 1...Kc6
        • 2.Qd6#
      • 1...Sxb3!
    • 1.Bc6+?
      • 1...Kxc6
        • 2.Qd6#
      • 1...dxc6!
  • Keys
    • 1.Sxd7!
      • threat
        • 2.Qc4#
      • 1...Ke6
        • 2.Qf7#
      • 1...Qe4
        • 2.Qd6#
      • 1...Rh4
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • Q(b);SBLOCK::QAR1(C)
    • R(f);SBLOCK::QAB1(C)
  • Tries
    • Try
      • B(B);
      • Threat
        • QAR1(C)
      • Vars
        • K(e);S_FLIGHT::QAR1(C)
        • P(g);::QAR1(C),XP(g)
        • Q(b);N_GUARD::QAB1(C)
        • R(f);SBLOCK::QAB1(C)
      • Refutation
        • S(a);
    • Try
      • B(B);CHECK
      • Vars
        • K(e);S_FLIGHT::QAR1(C)
      • Refutation
        • S(a);XB(B)
    • Try
      • B(B);CHECK
      • Vars
        • K(e);S_FLIGHT,XB(B)::QAR1(C)
      • Refutation
        • P(g);XB(B)
  • Actual
    • S(G);XP(g)
    • Threat
      • QAB1(C)
    • Vars
      • K(e);S_FLIGHT::QAB1(C)
      • Q(b);SBLOCK::QAR1(C)
      • R(f);N_GUARD::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).