MESON Chess Problem Database

Problem Display
PID: 184018 (2Q4n/2p2pK1/1P1N1pR1/1b1Nk3/1R1p4/B5P1/B6n/8 w - - 0 1)

Janet, Frank

British Chess Magazine, 1915

2Q4n/2p2pK1/1P1N1pR1/1b1Nk3/1R1p4/B5P1/B6n/8

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...d3
      • 2.Re4#
    • 1...f5
      • 2.Qxf5#
  • Tries
    • 1.Rxf6?
      • threat
        • 2.Qf5#
      • 1...Bd3
        • 2.Qe8#
      • 1...Bd7!
  • Keys
    • 1.Sxf6!
      • 1...Kxd6
        • 2.Qxc7#
      • 1...Sxg6
        • 2.Sxf7#
      • 1...cxb6
        • 2.Rxb5#
      • 1...cxd6
        • 2.Rg5#
      • 1...fxg6
        • 2.Qe6#
      • 1...Bf1
        • 2.Sd7#
      • 1...Be2
        • 2.Sd7#
      • 1...Bd3
        • 2.Sd7#
      • 1...Ba4
        • 2.Sc4#
      • 1...Bc4
        • 2.Sxc4#
      • 1...Ba6
        • 2.Sd7#
      • 1...Bc6
        • 2.Sc4#
      • 1...Bd7
        • 2.Sxd7#
      • 1...Be8
        • 2.Sc4#
      • 1...Sf1
        • 2.Sg4#
      • 1...Sf3
        • 2.Sg4#
      • 1...Sg4
        • 2.Sxg4#
      • 1...d3
        • 2.Re4#
      • 1...c5
        • 2.Qxc5#
      • 1...c6
        • 2.Sd7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 19
    • REMOVED MATES = 1
  • Sets
    • P(b);OGATE::R1(D)
    • P(e);::QAR1(J),XP(e)
  • Tries
    • Try
      • R(H);XP(e)
      • Threat
        • QAR1(J)
      • Vars
        • B(c);N_GUARD::QAR(J)
      • Refutation
        • B(c);
  • Actual
    • S(E);XP(e)
    • Vars
      • K(d);OGATEB,S_FLIGHT,XS(G)::QAB1(J),XP(f)
      • S(h);N_GUARD,XR(H)::S(G),XP(g)
      • P(f);N_GUARD,XP(F)::R(D),XB(c)
      • P(f);SBLOCK,XS(G)::R(H)
      • P(g);N_GUARD,XR(H)::QAR1(J)
      • B(c);N_GUARD::S(E)
      • B(c);N_GUARD::S(G)
      • B(c);N_GUARD::S(G),XB(c)
      • B(c);N_GUARD::S(E),XB(c)
      • S(a);N_GUARD::S(E)
      • S(a);N_GUARD::S(E),XS(a)
      • P(b);OGATE::R1(D)
      • P(f);OGATE::QAR2(J),XP(f)
      • P(f);S_CUTB(c)::S(E)
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).