MESON Chess Problem Database

Problem Display
PID: 152280 (7B/7B/3ppr1p/Rn1bk3/r3pNR1/1NP5/3PQ3/4nK2 w - - 0 1)

Harley, Brian

Chess Amateur (The), 1920

7B/7B/3ppr1p/Rn1bk3/r3pNR1/1NP5/3PQ3/4nK2

#2

10 + 10

15290 Harley Scrapbook 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Bc4
      • 2.d4#
    • 1...Sf3
      • 2.Sd3#
    • 1...Sd4
      • 2.Qxe4#
  • Tries
    • 1.Rg5+?
      • 1...Kxf4
        • 2.Qg4#
        • 2.Qe3#
      • 1...hxg5!
    • 1.d4+?
      • 1...Sxd4
        • 2.Qxe4#
      • 1...Rxd4!
  • Keys
    • 1.Rh4!
      • threat
        • 2.Qh5#
      • 1...Bc4
        • 2.d4#
      • 1...Sf3
        • 2.Sd3#
      • 1...Sd4
        • 2.Qxe4#
      • 1...h5
        • 2.Qxh5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • B(e);P_PINQ(C),P_SPINS(d),S_CUTR(b)::P(B)
    • S(a);N_PINS(F)::S(F)
    • S(d);P_SPINB(e),S_CUTR(b)::QAR1(C),XP(c)
  • Tries
    • Try
      • R(G);CHECK
      • Refutation
        • P(j);XR(G)
    • Try
      • P(B);CHECK
      • Vars
        • S(d);P_SPINB(e),XP(B)::QAR1(C),XP(c)
      • Refutation
        • R(b);XP(B)
  • Actual
    • R(G);
    • Threat
      • QAR(C)
    • Vars
      • B(e);P_PINQ(C),P_SPINS(d),S_CUTR(b)::P(B)
      • S(a);N_PINS(F)::S(F)
      • S(d);P_SPINB(e),S_CUTR(b)::QAR1(C),XP(c)
      • P(j);::QAR(C),XP(j)
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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).