MESON Chess Problem Database

Problem Display
PID: 175555 (4B2K/8/1p2p3/B1p5/n1k5/4R3/1r4N1/3Qn1b1 w - - 0 1)

Clark, WA

3rd Prize, Kingstown Society, 1900

4B2K/8/1p2p3/B1p5/n1k5/4R3/1r4N1/3Qn1b1

#2

6 + 8

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rf2
      • 2.Re4#
    • 1...Bh2
      • 2.Re4#
    • 1...Bxe3
      • 2.Sxe3#
    • 1...Sc2
      • 2.Qd3#
    • 1...Sxg2
      • 2.Qd3#
    • 1...Sd3
      • 2.Qxd3#
    • 1...Sf3
      • 2.Qd3#
    • 1...Sc3
      • 2.Rxc3#
  • Keys
    • 1.Bc6!
      • threat
        • 2.Qg4#
      • 1...Rxg2
        • 2.Qxa4#
      • 1...Bxe3
        • 2.Sxe3#
      • 1...Sxg2
        • 2.Qd3#
      • 1...Rd2
        • 2.Qxa4#
      • 1...Sd3
        • 2.Qxd3#
      • 1...Re2
        • 2.Qxa4#
      • 1...Rf2
        • 2.Re4#
        • 2.Qxa4#
      • 1...Bh2
        • 2.Re4#
      • 1...Sc2
        • 2.Qd3#
      • 1...Sf3
        • 2.Qd3#
      • 1...Sc3
        • 2.Rxc3#
      • 1...e5
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • R(c);S_CUTB(b)::R(C)
    • B(b);N_GUARD::R(C)
    • B(b);XR(C)::S(B),XB(b)
    • S(a);N_GUARD::QAB1(A)
    • S(a);N_GUARD,XS(B)::QAB1(A)
    • S(a);N_GUARD::QAB1(A),XS(a)
    • S(d);N_GUARD::R1(C),XS(d)
  • Actual
    • B(E);
    • Threat
      • QAR(A)
    • Vars
      • R(c);N_GUARD,XS(B)::QAR2(A),XS(d)
      • B(b);XR(C)::S(B),XB(b)
      • S(a);N_GUARD,XS(B)::QAB1(A)
      • R(c);N_GUARD::QAR2(A),XS(d)
      • S(a);N_GUARD::QAB1(A),XS(a)
      • B(b);N_GUARD::R(C)
      • S(a);N_GUARD::QAB1(A)
      • S(d);N_GUARD::R1(C),XS(d)
      • P(h);N_GUARD::QAB1(A)
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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).