MESON Chess Problem Database

Problem Display
PID: 272868 (8/8/qB4nK/1p2pr1n/4R3/1B6/NR1NPp1Q/4k2r w - - 0 1)

Meyer, EM

Die Schwalbe, 1932

8/8/qB4nK/1p2pr1n/4R3/1B6/NR1NPp1Q/4k2r

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rf3
      • 2.exf3#
    • 1...Rg5
      • 2.Bxf2#
      • 2.Qxf2#
    • 1...Shf4
      • 2.Bxf2#
    • 1...Sgf4
      • 2.Qxf2#
  • Tries
    • 1.Sc1?
      • threat
        • 2.Sd3#
      • 1...Rf3
        • 2.exf3#
      • 1...Shf4
        • 2.Bxf2#
      • 1...Sgf4
        • 2.Qxf2#
      • 1...b4!
    • 1.Sf3+?
      • 1...Kf1
        • 2.Rb1#
        • 2.Qxh1#
        • 2.Qxf2#
      • 1...Rxf3!
  • Keys
    • 1.Sb4!
      • threat
        • 2.Sd3#
      • 1...Rf3
        • 2.exf3#
      • 1...Shf4
        • 2.Bxf2#
      • 1...Sgf4
        • 2.Qxf2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • R(f);OGATE::R(G)+P(D),XR(f)
    • S(g);P_PINQ(E),S_CUTR(f)::B(H),XP(c)
    • S(i);P_PINB(H),S_CUTR(f)::QAB1(E),XP(c)
  • Tries
    • Try
      • S(A);
      • Threat
        • S(A)
      • Vars
        • R(f);OGATE::R(G)+P(D),XR(f)
        • S(g);P_PINQ(E),S_CUTR(f)::B(H),XP(c)
        • S(i);P_PINB(H),S_CUTR(f)::QAB1(E),XP(c)
      • Refutation
        • P(d);
    • Try
      • S(C);CHECK
      • Refutation
        • R(f);XS(C)
  • Actual
    • S(A);
    • Threat
      • S(A)
    • Vars
      • R(f);OGATE::R(G)+P(D),XR(f)
      • S(g);P_PINQ(E),S_CUTR(f)::B(H),XP(c)
      • S(i);P_PINB(H),S_CUTR(f)::QAB1(E),XP(c)
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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).