MESON Chess Problem Database

Problem Display
PID: 174252 (2b3RK/1P1k1PPn/6N1/1N1P4/4r3/8/2rB3b/8 w - - 0 1)

Buchner, Rudolf

Deutsche Arbeiter Schachzeitung, 1928

2b3RK/1P1k1PPn/6N1/1N1P4/4r3/8/2rB3b/8

#2

9 + 6

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Ra2
      • 2.bxc8Q#
      • 2.bxc8B#
    • 1...Rb2
      • 2.bxc8Q#
      • 2.bxc8B#
    • 1...Rxd2
      • 2.bxc8Q#
      • 2.bxc8B#
    • 1...Rc7
      • 2.b8S#
    • 1...Rf4
      • 2.b8S#
    • 1...Re5
      • 2.b8S#
    • 1...Re8
      • 2.fxe8Q#
    • 1...Bg1
      • 2.b8S#
    • 1...Bc7
      • 2.bxc8Q#
      • 2.bxc8B#
  • Tries
    • 1.f8Q?
      • threat
        • 2.Qd8#
      • 1...Re8
        • 2.Qxe8#
      • 1...Bc7
        • 2.Qxc8#
        • 2.bxc8Q#
        • 2.bxc8B#
      • 1...Sxf8!
  • Keys
    • 1.Ba5!
      • threat
        • 2.Rd8#
      • 1...Rc7
        • 2.b8S#
      • 1...Re8
        • 2.fxe8Q#
        • 2.fxe8B#
      • 1...Bc7
        • 2.bxc8Q#
        • 2.bxc8B#
      • 1...Sf8
        • 2.gxf8S#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • R(a);N_GUARD::PXB(f)=Q
    • R(a);N_GUARD,XB(A)::PXB(f)=Q
    • R(a);S_CUTB(b)::P=S
    • R(c);S_CUTB(b)::P=S
    • R(c);OGATE,P_PINR(H)::PXR(c)=Q
    • B(b);N_GUARD::P=S
    • B(b);S_CUTR(a)::PXB(f)=Q
  • Tries
    • Try
      • P(F);
      • Threat
        • QAR1(F)
      • Vars
        • R(c);N_GUARD::QAB1(F),XR(c)
      • Refutation
        • S(e);XQ(F)
  • Actual
    • B(A);
    • Threat
      • R1(H)
    • Vars
      • R(a);S_CUTB(b)::P=S
      • R(c);OGATE,P_PINR(H)::PXR(c)=Q
      • B(b);S_CUTR(a)::PXB(f)=Q
      • S(e);OGATE::PXS(e)=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).