MESON Chess Problem Database

Problem Display
PID: 224606 (1B1RN3/n2b2K1/4p3/R1n1PP2/2Pk2p1/2ppr3/3N4/6Q1 w - - 0 1)

Campo, Achille

Nashville Daily American, 1888

1B1RN3/n2b2K1/4p3/R1n1PP2/2Pk2p1/2ppr3/3N4/6Q1

#2

10 + 9

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sb3
      • 2.Rxd7#
    • 1...Sa4
      • 2.Rxd7#
    • 1...Sa6
      • 2.Rxd7#
    • 1...c2
      • 2.Qa1#
  • Tries
    • 1.Qxg4+?
      • 1...Se4
        • 2.Bxa7#
        • 2.Rxd7#
      • 1...Re4!
  • Keys
    • 1.Sd6!
      • 1...Kxe5
        • 2.Qxe3#
      • 1...cxd2
        • 2.Qa1#
      • 1...exf5
        • 2.Sxf5#
      • 1...c2
        • 2.Qa1#
      • 1...Ba4
        • 2.Sb5#
      • 1...Bb5
        • 2.Sxb5#
      • 1...Bc6
        • 2.Sb5#
      • 1...Bc8
        • 2.Sb5#
      • 1...Be8
        • 2.Sb5#
      • 1...Sb3
        • 2.Sxb3#
      • 1...Sa4
        • 2.Sb3#
      • 1...Se4
        • 2.Sb3#
      • 1...Sa6
        • 2.Sb3#
      • 1...Sb7
        • 2.Sb3#
      • 1...Sb5
        • 2.Sxb5#
      • 1...Sc6
        • 2.Sb5#
      • 1...Sc8
        • 2.Sb5#
      • 1...g3
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 3
    • ADDED MATES = 14
    • REMOVED MATES = 0
  • Sets
    • S(f);N_GUARD::R(I),XB(i)
    • P(a);OGATEB::QAB(A)
  • Tries
    • Try
      • Q(A);CHECK,N_PINR(c),XP(e)
      • Refutation
        • R(c);P_SPINR(c)
  • Actual
    • S(J);N_PINB(i)
    • Vars
      • K(d);N_SPINR(c),P_SPINS(f),S_FLIGHT,XP(E)::QAR2(A),XR(c)
      • P(a);OGATEB,XS(B)::QAB(A)
      • P(g);XP(F)::S(J),XP(g)
      • P(a);OGATEB::QAB(A)
      • B(i);::R(I)+S(J),DCHECK
      • B(i);::R(I)+S(J),DCHECK,XB(i)
      • S(f);N_GUARD::S(B),XS(f)
      • S(f);N_GUARD::S(B)
      • S(h);N_GUARD::S(J),XS(h)
      • S(h);N_GUARD::S(J)
      • P(e);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).