MESON Chess Problem Database

Problem Display
PID: 48647 (8/6Q1/2P2n2/1N3p2/3R1P2/4krp1/1K3pR1/5B2 w - - 0 1)

Collins, Francis Charles

Source?, 0000

8/6Q1/2P2n2/1N3p2/3R1P2/4krp1/1K3pR1/5B2

#2

8 + 6

508 Chess Chips 1878

SOLUTION

  • SOUND
  • Sets
    • 1...Sd5
      • 2.Qe5#
    • 1...Sh5
      • 2.Qe5#
      • 2.Qe7#
    • 1...Sh7
      • 2.Qe5#
      • 2.Qe7#
    • 1...Se8
      • 2.Qe5#
      • 2.Qe7#
    • 1...Sg8
      • 2.Qe5#
  • Tries
    • 1.Qf7?
      • threat
        • 2.Qb3#
      • 1...Sd5
        • 2.Qe6#
      • 1...Se4!
  • Keys
    • 1.Sc3!
      • 1...Kxd4
        • 2.Qa7#
      • 1...Rxf4
        • 2.Rd3#
      • 1...Se4
        • 2.Sd5#
      • 1...Sg4
        • 2.Sd1#
        • 2.Sd5#
      • 1...Sd5
        • 2.Sd1#
        • 2.Sxd5#
        • 2.Qe5#
      • 1...Sh5
        • 2.Sd1#
        • 2.Sd5#
        • 2.Qe5#
      • 1...Sd7
        • 2.Sd1#
        • 2.Sd5#
      • 1...Sh7
        • 2.Sd1#
        • 2.Sd5#
        • 2.Qe5#
      • 1...Se8
        • 2.Sd1#
        • 2.Sd5#
        • 2.Qe5#
      • 1...Sg8
        • 2.Sd1#
        • 2.Sd5#
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • S(f);OGATE::QAR2(H)
  • Tries
    • Try
      • Q(H);
      • Threat
        • QAR(H)
      • Vars
        • S(f);N_GUARD::QAR(H)
      • Refutation
        • S(f);
  • Actual
    • S(F);
    • Vars
      • K(b);OGATEB,P_SPINS(f),S_FLIGHT,XR(D)::QAB(H)
      • R(c);SBLOCK,XP(E)::R1(D)
      • S(f);N_GUARD::S(F)
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).