MESON Chess Problem Database

Problem Display
PID: 21364 (BB6/Q7/8/8/5Rp1/K6p/R5p1/6rk w - - 0 1)

Lindmark, CE

Good Companions (November), 1918

BB6/Q7/8/8/5Rp1/K6p/R5p1/6rk

#2

6 + 5

3132 The Good Companion Two-Mover 1922

SOLUTION

  • SOUND
  • Sets
    • 1...Rf1
      • 2.Rxf1#
  • Tries
    • 1.Bxg2+?
      • 1...Kh2
        • 2.Rxg4#
      • 1...hxg2
        • 2.Qh7#
      • 1...Rxg2!
    • 1.Rf1?
      • threat
        • 2.Rxg1#
        • 2.Qxg1#
      • 1...g3
        • 2.Qxg1#
      • 1...h2
        • 2.Bxg2#
      • 1...Rxf1!
  • Keys
    • 1.Rxg2!
      • threat
        • 2.Qxg1#
      • 1...Ra1+
        • 2.Ra2#
      • 1...Rxg2
        • 2.Rf1#
      • 1...hxg2
        • 2.Qh7#
      • 1...Rb1
        • 2.Rb2#
      • 1...Rc1
        • 2.Rc2#
      • 1...Rd1
        • 2.Rd2#
      • 1...Re1
        • 2.Re2#
      • 1...Rf1
        • 2.Rxf1#
      • 1...h2
        • 2.Rxg1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • R(a);OGATEB::R(C),XR(a)
  • Tries
    • Try
      • B(E);CHECK,XP(c)
      • Vars
        • K(b);P-FLIGHT::B(F)+R(C),XP(e)
        • P(d);S_CUTR(a),XB(E)::QAR(D)
      • Refutation
        • R(a);XB(E)
    • Try
      • R(C);P_PINR(a)
      • Threat
        • DUALS(2)
      • Vars
        • P(e);::QAR1(D),XR(a)
        • P(d);N_GUARD::B(E),XP(c)
      • Refutation
        • R(a);N_SPINR(a),XR(C)
  • Actual
    • R(A);XP(c)
    • Threat
      • QAR1(D),XR(a)
    • Vars
      • R(a);CHECK,N_GUARD::B(E)+R(A)
      • R(a);OGATEB,P_SPINR(a),XR(A)::R(C)
      • P(d);OGATEB,P_SPINP(d),XR(A)::QAR(D)
      • R(a);N_GUARD::B(E)+R(A)
      • R(a);OGATEB::R(C),XR(a)
      • P(d);SBLOCK::B(E)+R(A),DCHECK,XR(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).