MESON Chess Problem Database

Problem Display
PID: 173164 (1N1k4/3P3K/1PPB1PN1/3n4/4R3/qb6/5Q1b/2r1r3 w - - 0 1)

Ling, John Francis

Problem Observer, 2006

1N1k4/3P3K/1PPB1PN1/3n4/4R3/qb6/5Q1b/2r1r3

#2

10 + 7

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rd1
      • 2.Re8#
    • 1...Rf1
      • 2.Re8#
    • 1...Rg1
      • 2.Re8#
    • 1...Rh1
      • 2.Re8#
    • 1...Sc3
      • 2.c7#
    • 1...Se3
      • 2.Re8#
    • 1...Sb4
      • 2.Be7#
    • 1...Sf4
      • 2.Bc7#
    • 1...Sxb6
      • 2.Qxb6#
    • 1...Sxf6+
      • 2.Qxf6#
    • 1...Sc7
      • 2.bxc7#
    • 1...Se7
      • 2.fxe7#
  • Tries
    • 1.Se5?
      • threat
        • 2.Sf7#
      • 1...Sxf6+
        • 2.Qxf6#
      • 1...Sxb6
        • 2.Qxb6#
      • 1...Sc3
        • 2.Bc7#
        • 2.c7#
      • 1...Se3
        • 2.Bc7#
      • 1...Sb4
        • 2.Bc7#
        • 2.Be7#
      • 1...Sf4
        • 2.Bc7#
      • 1...Sc7
        • 2.Bxc7#
        • 2.bxc7#
      • 1...Se7
        • 2.Bc7#
        • 2.fxe7#
      • 1...Bxe5!
  • Keys
    • 1.Sh8!
      • threat
        • 2.Sf7#
      • 1...Sxf6+
        • 2.Qxf6#
      • 1...Sxb6
        • 2.Qxb6#
      • 1...Sc3
        • 2.c7#
      • 1...Se3
        • 2.Re8#
      • 1...Sb4
        • 2.Be7#
      • 1...Sf4
        • 2.Bc7#
      • 1...Sc7
        • 2.bxc7#
      • 1...Se7
        • 2.fxe7#

There are these versions: 78476

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 4
  • Sets
    • R(b);N_GUARD::R1(B)
    • S(f);N_GUARD,S_CUTR(a)::P(D)
    • S(f);S_CUTR(b)::R1(B)
    • S(f);N_GUARD,S_CUTQ(d)::B(E)
    • S(f);N_GUARD,S_CUTB(c)::B(E)
    • S(f);OGATE,XP(C)::QAB(A),XS(f)
    • S(f);CHECK,OGATE,XP(F)::QAB(A),XS(f)
    • S(f);OGATE::P(C),XS(f)
    • S(f);OGATE::P(F),XS(f)
  • Tries
    • Try
      • S(G);
      • Threat
        • S(G)
      • Vars
        • S(f);CHECK,OGATE,XP(F)::QAB(A),XS(f)
        • S(f);OGATE,XP(C)::QAB(A),XS(f)
        • S(f);N_GUARD::B(E)
      • Refutation
        • B(c);XS(G)
  • Actual
    • S(G);
    • Threat
      • S(G)
    • Vars
      • S(f);CHECK,OGATE,XP(F)::QAB(A),XS(f)
      • S(f);OGATE,XP(C)::QAB(A),XS(f)
      • S(f);N_GUARD,S_CUTR(a)::P(D)
      • S(f);S_CUTR(b)::R1(B)
      • S(f);N_GUARD,S_CUTQ(d)::B(E)
      • S(f);N_GUARD,S_CUTB(c)::B(E)
      • S(f);OGATE::P(C),XS(f)
      • S(f);OGATE::P(F),XS(f)
HTML5 logo

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).