MESON Chess Problem Database

Problem Display
PID: 203253 (8/3N4/rp1pp2N/3k3n/2R5/p5Q1/Kn6/8 w - - 0 1)

Reinhold, A

Deutsche Schachblatter, 1924

8/3N4/rp1pp2N/3k3n/2R5/p5Q1/Kn6/8

#2

5 + 8

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ra4
      • 2.Sxb6#
    • 1...Ra5
      • 2.Sxb6#
    • 1...Ra7
      • 2.Sxb6#
    • 1...Ra8
      • 2.Sxb6#
    • 1...Sd1
      • 2.Qd3#
    • 1...Sd3
      • 2.Qxd3#
    • 1...Sa4
      • 2.Qd3#
    • 1...e5
      • 2.Qg8#
  • Tries
    • 1.Qg5+?
      • 1...e5
        • 2.Qg8#
      • 1...Kxc4!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Se3#
      • 1...Kxc4
        • 2.Qb3#
      • 1...Sxc4
        • 2.Qg2#
        • 2.Qf3#
      • 1...exf5
        • 2.Qg8#
      • 1...e5
        • 2.Qg8#
      • 1...Sd1
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • R(e);N_GUARD::S(E),XP(f)
    • S(a);N_GUARD::QAR2(B)
    • S(a);N_GUARD::QAR2(B),XS(a)
    • P(h);OGATEB::QAB(B)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • P(h);OGATEB,P_SPINP(h)::QAB(B)
      • Refutation
        • K(c);S_FLIGHT,XR(C)
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • K(c);OGATEB,S_FLIGHT,XR(C)::QAB1(B)
      • P(h);OGATEB,XS(D)::QAB(B)
      • P(h);OGATEB::QAB(B)
      • S(a);N_GUARD::QAR2(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).