MESON Chess Problem Database

Problem Display
PID: 222495 (1B2K3/4p2R/1nkNQ3/2p5/4P3/2rn1N2/8/2R5 w - - 0 1)

Gross, Harry

Philadelphia Times, 1884

1B2K3/4p2R/1nkNQ3/2p5/4P3/2rn1N2/8/2R5

#2

8 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ra3
      • 2.Sd4#
    • 1...Rb3
      • 2.Sd4#
    • 1...Sxc1
      • 2.Se5#
    • 1...Se1
      • 2.Se5#
    • 1...Sb2
      • 2.Se5#
    • 1...Sf2
      • 2.Se5#
    • 1...Sb4
      • 2.Se5#
    • 1...Sf4
      • 2.Se5#
    • 1...Se5
      • 2.Sxe5#
  • Tries
    • 1.Qxe7?
      • threat
        • 2.Qb7#
        • 2.Qc7#
      • 1...Sd5
        • 2.Qb7#
      • 1...Sa8
        • 2.Qb7#
      • 1...c4
        • 2.Qc7#
      • 1...Sd7!
  • Keys
    • 1.Qb3!
      • threat
        • 2.Qb5#
      • 1...Rxb3
        • 2.Sd4#
      • 1...exd6
        • 2.Rc7#
      • 1...Sb4
        • 2.Se5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 7
  • Sets
    • R(a);P_SPINP(c)::S(B)
    • S(b);N_GUARD,XR(A)::S(B)
    • S(b);N_GUARD::S(B)
    • S(b);N_GUARD::S(B),XS(b)
  • Tries
    • Try
      • Q(E);XP(f)
      • Threat
        • DUALS(2)
      • Vars
        • S(d);::QAB1(E)
        • P(c);::QAR1(E)
      • Refutation
        • S(d);
  • Actual
    • Q(E);
    • Threat
      • QAB1(E)
    • Vars
      • R(a);P_SPINP(c),XQ(E)::S(B)
      • P(f);OGATE,SBLOCK,XS(D)::R1(F)
      • S(b);N_GUARD::S(B)
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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).