MESON Chess Problem Database

Problem Display
PID: 32550 (RR6/B1p2Q2/1pB1N3/2p5/8/k2p4/P3n3/K3N3 w - - 0 1)

Martindale, Frank W

The Westminster Papers, 1876

RR6/B1p2Q2/1pB1N3/2p5/8/k2p4/P3n3/K3N3

#2

9 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...d2
      • 2.Sc2#
    • 1...c4
      • 2.Qe7#
      • 2.Qf8#
    • 1...b5
      • 2.Bxc5#
  • Tries
    • 1.Sxd3?
      • threat
        • 2.Bxb6#
      • 1...b5
        • 2.Bxc5#
        • 2.Bb6#
      • 1...Sc3!
    • 1.Rxb6?
      • threat
        • 2.Bb8#
        • 2.Rb3#
      • 1...Sc1
        • 2.Bb8#
      • 1...Sc3
        • 2.Rb3#
      • 1...Sd4
        • 2.Bb8#
      • 1...c4
        • 2.Bb8#
        • 2.Qe7#
        • 2.Qf8#
      • 1...cxb6!
  • Keys
    • 1.Qf2!
      • 1...Kb4
        • 2.Qxc5#
      • 1...b5
        • 2.Bxc5#
      • 1...Sc1
        • 2.Qb2#
      • 1...Sg1
        • 2.Qb2#
      • 1...Sc3
        • 2.Qb2#
      • 1...Sg3
        • 2.Qb2#
      • 1...Sd4
        • 2.Qb2#
      • 1...Sf4
        • 2.Qb2#
      • 1...d2
        • 2.Sc2#
      • 1...c4
        • 2.Qf8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • P(c);N_GUARD::S(B)
    • P(e);OGATE::R(H)+B(F),DCHECK,XP(d)
  • Tries
    • Try
      • S(B);XP(c)
      • Threat
        • R(H)+B(F),XP(e)
      • Refutation
        • S(a);
    • Try
      • R(I);XP(e)
      • Threat
        • DUALS(2)
      • Vars
        • S(a);::R(H)+B(F)
        • S(a);::R1(I)
      • Refutation
        • P(f);XR(I)
  • Actual
    • Q(G);
    • Vars
      • K(b);P_SPINP(e),S_FLIGHT::QAB1(G),XP(d)
      • P(e);OGATE::R(H)+B(F),DCHECK,XP(d)
      • S(a);OGATE::QAB1(G)
      • P(c);N_GUARD::S(B)
      • P(d);OGATEB::QAB(G)
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).