MESON Chess Problem Database

Problem Display
PID: 53911 (K4NQ1/3B3p/R6P/4p1nk/7b/P3Bp1p/7P/q7 w - - 0 1)

Hargreaves, George W

The Chess Review, 1935

K4NQ1/3B3p/R6P/4p1nk/7b/P3Bp1p/7P/q7

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Be1
      • 2.Qxg5#
    • 1...Bf2
      • 2.Qxg5#
    • 1...Bg3
      • 2.Qxg5#
    • 1...Se4
      • 2.Bg4#
      • 2.Be8#
      • 2.Qf7#
      • 2.Qg4#
    • 1...Se6
      • 2.Be8#
    • 1...Sf7
      • 2.Bg4#
      • 2.Qxf7#
      • 2.Qg4#
  • Tries
    • 1.Sxh7?
      • threat
        • 2.Qg6#
      • 1...Be1
        • 2.Qxg5#
      • 1...Bf2
        • 2.Qxg5#
      • 1...Bg3
        • 2.Qxg5#
      • 1...Se6
        • 2.Be8#
      • 1...Qb1!
    • 1.Be8+?
      • 1...Sf7
        • 2.Bxf7#
      • 1...Kg4!
  • Keys
    • 1.Se6!
      • threat
        • 2.Sg7#
      • 1...Kg4
        • 2.Sf4#
      • 1...Kxh6
        • 2.Sg7#
      • 1...Sxe6
        • 2.Be8#
      • 1...Be1
        • 2.Qxg5#
      • 1...Bf2
        • 2.Qxg5#
      • 1...Bg3
        • 2.Qxg5#
      • 1...e4
        • 2.Sf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(d);N_GUARD::QAR1(I),XS(f)
    • S(f);N_GUARD::B(F)
  • Tries
    • Try
      • S(H);XP(h)
      • Threat
        • QAB1(I)
      • Vars
        • B(d);N_GUARD::QAR1(I),XS(f)
        • S(f);N_GUARD::B(F)
      • Refutation
        • Q(a);
    • Try
      • B(F);CHECK
      • Vars
        • S(f);N_GUARD,P_SPINS(f)::B(F),XS(f)
      • Refutation
        • K(g);P_SPINS(f),S_FLIGHT
  • Actual
    • S(H);
    • Threat
      • S(H)
    • Vars
      • K(g);P_SPINS(f),S_FLIGHT::B(F)+S(H)
      • K(g);P-FLIGHT,P_SPINS(f),XP(E)::R(D)+S(H)
      • S(f);N_GUARD,XS(H)::B(F)
      • B(d);N_GUARD::QAR1(I),XS(f)
      • P(e);N_GUARD::S(H)
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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).