MESON Chess Problem Database

Problem Display
PID: 208057 (4B3/p2Np2n/n3kp2/3p1p2/2pQpB2/3b4/7p/2R4K w - - 0 1)

Shinkman, William Anthony

New York Clipper, 1873

4B3/p2Np2n/n3kp2/3p1p2/2pQpB2/3b4/7p/2R4K

#2

6 + 12

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sb4
      • 2.Sc5#
    • 1...Sc5
      • 2.Sxc5#
    • 1...Sc7
      • 2.Sc5#
    • 1...Sb8
      • 2.Sc5#
    • 1...Sg5
      • 2.Sf8#
    • 1...Sf8
      • 2.Sxf8#
  • Tries
    • 1.Ra1?
      • threat
        • 2.Rxa6#
      • 1...Sb4
        • 2.Sc5#
      • 1...Sc5
        • 2.Sxc5#
      • 1...Sc7
        • 2.Sc5#
      • 1...Sb8
        • 2.Sc5#
      • 1...c3!
    • 1.Qxf6+?
      • 1...Sxf6
        • 2.Sf8#
      • 1...exf6!
    • 1.Qxa7?
      • threat
        • 2.Qb6#
        • 2.Qxa6#
      • 1...Sb4
        • 2.Sc5#
      • 1...Sc5
        • 2.Sxc5#
        • 2.Qb6#
      • 1...Sc7
        • 2.Sc5#
        • 2.Qb6#
      • 1...Sb8
        • 2.Sc5#
      • 1...c3
        • 2.Qb6#
      • 1...d4!
  • Keys
    • 1.Qxd3!
      • 1...cxd3
        • 2.Rc6#
      • 1...exd3
        • 2.Re1#
      • 1...d4
        • 2.Qxc4#
      • 1...Sb4
        • 2.Sc5#
      • 1...Sc5
        • 2.Sxc5#
      • 1...Sc7
        • 2.Sc5#
      • 1...Sb8
        • 2.Sc5#
      • 1...Sg5
        • 2.Sf8#
      • 1...Sf8
        • 2.Sxf8#
      • 1...c3
        • 2.Qxa6#
      • 1...e3
        • 2.Qxe3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • S(g);N_GUARD::S(E)
    • S(g);N_GUARD::S(E),XS(g)
    • S(l);N_GUARD::S(E)
    • S(l);N_GUARD::S(E),XS(l)
  • Tries
    • Try
      • R(A);
      • Threat
        • R(A),XS(g)
      • Vars
        • S(g);N_GUARD::S(E)
        • S(g);N_GUARD::S(E),XS(g)
      • Refutation
        • P(c);
    • Try
      • Q(C);CHECK,XP(i)
      • Vars
        • S(l);SBLOCK,XQ(C)::S(E)
      • Refutation
        • P(k);XQ(C)
    • Try
      • Q(C);XP(j)
      • Threat
        • DUALS(2)
      • Vars
        • S(g);N_GUARD::S(E)
        • P(c);::QAR(C)
      • Refutation
        • P(e);
  • Actual
    • Q(C);XB(b)
    • Vars
      • P(c);OGATE,XQ(C)::R(A)
      • P(d);OGATEB,XQ(C)::R(A)
      • P(e);OGATEB::QAB(C),XP(c)
      • S(g);N_GUARD::S(E)
      • S(g);N_GUARD::S(E),XS(g)
      • S(l);N_GUARD::S(E)
      • S(l);N_GUARD::S(E),XS(l)
      • P(c);OGATE::QAR(C),XS(g)
      • P(d);OGATEB::QAR(C),XP(d)
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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).