MESON Chess Problem Database

Problem Display
PID: 174166 (2K1n3/2nPR3/3k3r/N2p4/2pP3p/7b/4Q2b/8 w - - 0 1)

Buchner, Richard

Arbeiter Schachzeitung, 1928

2K1n3/2nPR3/3k3r/N2p4/2pP3p/7b/4Q2b/8

#2

6 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Re6
      • 2.d8Q#
    • 1...Bg1
      • 2.Qe5#
    • 1...Be5
      • 2.Qxe5#
    • 1...Bf1
      • 2.d8Q#
      • 2.d8R#
    • 1...Bg2
      • 2.d8Q#
      • 2.d8R#
    • 1...Bxd7+
      • 2.Rxd7#
  • Tries
    • 1.Rg7?
      • threat
        • 2.Qe7#
      • 1...Bxd7+
        • 2.Rxd7#
      • 1...Be5
        • 2.Qxe5#
      • 1...Re6
        • 2.d8Q#
        • 2.d8R#
      • 1...Be6
        • 2.Qxh2#
      • 1...Se6
        • 2.dxe8S#
      • 1...Sxg7!
  • Keys
    • 1.Rf7!
      • threat
        • 2.Qe7#
      • 1...Bxd7+
        • 2.Rxd7#
      • 1...Be5
        • 2.Qxe5#
      • 1...Re6
        • 2.d8Q#
        • 2.d8R#
      • 1...Be6
        • 2.Qxh2#
      • 1...Se6
        • 2.dxe8S#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • R(g);N_PINP(D)::P=Q
    • B(a);N_GUARD::QAB1(A)
    • B(a);N_GUARD::QAB1(A),XB(a)
    • B(b);N_PINP(D)::P=Q
    • B(b);CHECK,OGATE,XP(D)::R1(E),XB(b)
  • Tries
    • Try
      • R(E);
      • Threat
        • QAB1(A)
      • Vars
        • B(b);CHECK,OGATE,XP(D)::R1(E),XB(b)
        • B(a);N_GUARD::QAB1(A),XB(a)
        • R(g);N_PINP(D)::P=Q
        • B(b);SBLOCK::QAB(A),XB(a)
        • S(h);N_PINP(D)::PXS(i)=S
      • Refutation
        • S(i);XR(E)
  • Actual
    • R(E);
    • Threat
      • QAB1(A)
    • Vars
      • B(b);CHECK,OGATE,XP(D)::R1(E),XB(b)
      • B(a);N_GUARD::QAB1(A),XB(a)
      • R(g);N_PINP(D)::P=Q
      • B(b);SBLOCK::QAB(A),XB(a)
      • S(h);N_PINP(D)::PXS(i)=S
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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).