MESON Chess Problem Database

Problem Display
PID: 52930 (8/p2KR1Q1/1b1pN1N1/3k2p1/2p3B1/2r5/5p2/1r6 w - - 0 1)

Osswald, Alfred H

Schach-Echo, 1933

8/p2KR1Q1/1b1pN1N1/3k2p1/2p3B1/2r5/5p2/1r6

#2

6 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Sef4#
    • 1...Rc1
      • 2.Bf3#
    • 1...Rc2
      • 2.Bf3#
    • 1...Rf3
      • 2.Bxf3#
    • 1...Be3
      • 2.Bf3#
    • 1...Bd4
      • 2.Qxd4#
    • 1...Ba5
      • 2.Qd4#
    • 1...Bc5
      • 2.Sc7#
    • 1...Bc7
      • 2.Qd4#
    • 1...Bd8
      • 2.Qd4#
  • Keys
    • 1.Qh8!
      • threat
        • 2.Qa8#
      • 1...Ke4
        • 2.Sef4#
      • 1...Be3
        • 2.Bf3#
      • 1...Bd4
        • 2.Qxd4#
      • 1...Ba5
        • 2.Qd4#
      • 1...Bc5
        • 2.Sc7#
      • 1...Bc7
        • 2.Qd4#
      • 1...Bd8
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 3
  • Sets
    • K(e);S_FLIGHT::R(E)+S(B)
    • R(c);N_GUARD::B(A)
    • R(c);N_GUARD::B(A),XR(c)
    • B(g);S_CUTR(c)::B(A)
    • B(g);N_GUARD::QAR1(F),XB(g)
    • B(g);N_GUARD::QAR1(F)
    • B(g);N_GUARD,SBLOCK::S(B)
  • Actual
    • Q(F);
    • Threat
      • QAB(F)
    • Vars
      • K(e);S_FLIGHT::R(E)+S(B)
      • B(g);S_CUTR(c)::B(A)
      • B(g);N_GUARD::QAR1(F),XB(g)
      • B(g);N_GUARD::QAR1(F)
      • B(g);N_GUARD,SBLOCK::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).