MESON Chess Problem Database

Problem Display
PID: 58016 (2B3R1/4p2N/2p1p3/8/2P1kpnQ/1nK5/R4P2/1N6 w - - 0 1)

Chancellor, JG

British Chess Magazine, 1884

2B3R1/4p2N/2p1p3/8/2P1kpnQ/1nK5/R4P2/1N6

#2

9 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Kf3
      • 2.Qh1#
    • 1...e5
      • 2.Sg5#
  • Tries
    • 1.Re2+?
      • 1...Kf3
        • 2.Qxg4#
      • 1...Kf5
        • 2.Bxe6#
        • 2.Rg5#
        • 2.Qg5#
        • 2.Qxg4#
        • 2.Qh5#
      • 1...Se3!
  • Keys
    • 1.Qh5!
      • 1...Kf3
        • 2.Qh1#
      • 1...Sxf2
        • 2.Re2#
      • 1...Sa1
        • 2.Sd2#
      • 1...Sc1
        • 2.Sd2#
      • 1...Sd2
        • 2.Sxd2#
      • 1...Sd4
        • 2.Sd2#
      • 1...Sa5
        • 2.Sd2#
      • 1...Sc5
        • 2.Sd2#
      • 1...Sh2
        • 2.Re2#
      • 1...Se3
        • 2.f3#
      • 1...Se5
        • 2.Re2#
      • 1...Sf6
        • 2.Re2#
      • 1...Sh6
        • 2.Re2#
      • 1...f3
        • 2.Rxg4#
      • 1...c5
        • 2.Bb7#
      • 1...e5
        • 2.Sg5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 14
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::QAB(F)
    • P(f);SBLOCK::S(G)
  • Tries
    • Try
      • R(B);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(F),XS(d)
      • Refutation
        • S(d);P_SPINP(c),P_SPINS(d)
  • Actual
    • Q(F);
    • Vars
      • K(b);P_SPINS(d),S_FLIGHT::QAB(F)
      • S(d);N_GUARD,XP(C)::R(B)
      • S(a);N_GUARD::S(A)
      • S(a);N_GUARD::S(A),XS(a)
      • S(d);N_GUARD::R(B)
      • S(d);SBLOCK::P(C)
      • P(c);OGATEB,SBLOCK::R(I),XS(d)
      • P(e);OGATEB::B(H)
      • P(f);SBLOCK::S(G)
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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).