MESON Chess Problem Database

Problem Display
PID: 78217 (1B6/4p1n1/4kp1r/3NN2p/1n2BQ1K/8/5R2/R2r1b2 w - - 0 1)

Morra, Juan Carlos

The Tablet, 1958

(First published on Sat May 3 1958)

1B6/4p1n1/4kp1r/3NN2p/1n2BQ1K/8/5R2/R2r1b2

#2

8 + 9

15239 Valois Notebooks 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Sd3
      • 2.Ra6#
    • 1...Sf5+
      • 2.Qxf5#
    • 1...Se8
      • 2.Qf5#
    • 1...f5
      • 2.Qxh6#
  • Keys
    • 1.Qd2!
      • threat
        • 2.Sf4#
      • 1...Sf5+
        • 2.Bxf5#
      • 1...Sxd5
        • 2.Bxd5#
      • 1...fxe5
        • 2.Sc7#
      • 1...Sd3
        • 2.Ra6#
      • 1...f5
        • 2.Qxh6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • S(c);N_GUARD,S_CUTB(b)::R(A)
    • S(i);CHECK,N_GUARD::QAB1(D),XS(i)
    • S(i);N_GUARD::QAB1(D)
    • P(f);OGATEB::QAR(D),XR(g)
  • Actual
    • Q(D);
    • Threat
      • S(F)
    • Vars
      • S(i);CHECK,N_GUARD::B(C),XS(i)
      • S(c);OGATE,XS(F)::B(C),XS(c)
      • P(f);SBLOCK,XS(G)::S(F)
      • S(c);N_GUARD,S_CUTB(b)::R(A)
      • P(f);OGATEB::QAR(D),XR(g)
HTML5 logo

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).