MESON Chess Problem Database

Problem Display
PID: 204392 (6n1/b2Q3r/8/1K2p3/1np1NR2/4k2p/1Nrpb1PB/2q1R3 w - - 0 1)

Rothstein, Louis

Comm., Centurini/Guidelli MT, 1925

6n1/b2Q3r/8/1K2p3/1np1NR2/4k2p/1Nrpb1PB/2q1R3

#2

8 + 12

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qd1
      • 2.Sxd1#
    • 1...Rh4
      • 2.Qxa7#
    • 1...Rh5
      • 2.Qxa7#
    • 1...Rh8
      • 2.Qxa7#
    • 1...Se7
      • 2.Qxa7#
    • 1...c3+
      • 2.Sc4#
  • Keys
    • 1.Sd6!
      • threat
        • 2.Sf5#
      • 1...c3+
        • 2.Sdc4#
      • 1...exf4
        • 2.Bg1#
      • 1...Rh5
        • 2.Qxa7#
      • 1...Rf7
        • 2.Qxh3#
      • 1...Sh6
        • 2.Qxh3#
      • 1...Se7
        • 2.Qxa7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • Q(a);N_GUARD::S(B),XQ(a)
    • R(k);N_GUARD::QAB(H),XB(j)
    • S(l);S_CUTR(k)::QAB(H),XB(j)
    • P(h);CHECK,S_CUTR(b)::S(B)
  • Actual
    • S(E);
    • Threat
      • S(E)
    • Vars
      • P(h);CHECK,S_CUTR(b)::S(E)
      • P(i);SBLOCK,XR(F)::B(D)
      • R(k);N_GUARD::QAB(H),XB(j)
      • R(k);N_GUARD::QAR(H),XP(f)
      • S(l);S_CUTR(k)::QAR(H),XP(f)
      • S(l);S_CUTR(k)::QAB(H),XB(j)
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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).