MESON Chess Problem Database

Problem Display
PID: 203532 (8/3p1Q2/1n1p4/3N4/p3kp2/5p1r/2Pp3r/B2K1N2 w - - 0 1)

Kettel, Karl

Essener Arbeiter Schachzeitung, 1924

8/3p1Q2/1n1p4/3N4/p3kp2/5p1r/2Pp3r/B2K1N2

#2

6 + 10

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sxd5
      • 2.Qg6#
    • 1...f2
      • 2.Sxd2#
  • Tries
    • 1.Sxb6?
      • threat
        • 2.Qd5#
        • 2.Qg6#
      • 1...f2
        • 2.Qd5#
      • 1...Rg2
        • 2.Qd5#
      • 1...Rg3
        • 2.Qd5#
      • 1...Rh6
        • 2.Qd5#
      • 1...d5
        • 2.Qxd5#
        • 2.Qg6#
      • 1...Rh5!
    • 1.Bh8?
      • threat
        • 2.Sc3#
      • 1...Sxd5
        • 2.Qg6#
      • 1...f2
        • 2.Sxd2#
      • 1...Rxh8!
    • 1.Qh5?
      • threat
        • 2.Sf6#
      • 1...Sxd5
        • 2.Qg6#
      • 1...Rxh5!
  • Keys
    • 1.Bg7!
      • threat
        • 2.Sc3#
      • 1...Sxd5
        • 2.Qg6#
      • 1...f2
        • 2.Sxd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(h);SBLOCK,XS(E)::QAB(F)
    • P(c);S_CUTR(b)::S(C),XP(a)
  • Tries
    • Try
      • S(E);XS(h)
      • Threat
        • DUALS(2)
      • Vars
        • P(c);::QAB1(F)
        • R(b);::QAB1(F)
        • R(d);::QAB1(F)
      • Refutation
        • R(d);
    • Try
      • B(A);
      • Threat
        • S(E)
      • Vars
        • S(h);SBLOCK,XS(E)::QAB(F)
        • P(c);S_CUTR(b)::S(C),XP(a)
      • Refutation
        • R(d);XB(A)
    • Try
      • Q(F);
      • Threat
        • S(E)
      • Vars
        • S(h);SBLOCK,XS(E)::QAB(F)
      • Refutation
        • R(d);XQ(F)
  • Actual
    • B(A);
    • Threat
      • S(E)
    • Vars
      • S(h);SBLOCK,XS(E)::QAB(F)
      • P(c);S_CUTR(b)::S(C),XP(a)
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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).