MESON Chess Problem Database

Problem Display
PID: 202389 (5K2/2P5/2rp4/1p2P3/nN1kN3/B2P4/3Pp1pQ/3b4 w - - 0 1)

Somma, Francesco

L'Alfiere di Re, 1923

5K2/2P5/2rp4/1p2P3/nN1kN3/B2P4/3Pp1pQ/3b4

#2

9 + 8

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sc5
      • 2.Bb2#
    • 1...dxe5
      • 2.Qg1#
  • Keys
    • 1.Sc5!
      • threat
        • 2.Se6#
      • 1...Kxc5
        • 2.Qg1#
      • 1...Rxc5
        • 2.Qf4#
      • 1...Sxc5
        • 2.Bb2#
      • 1...dxc5
        • 2.Qf4#
      • 1...dxe5
        • 2.Qg1#
      • 1...Bb3
        • 2.Sxb3#
      • 1...d5
        • 2.Sxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • S(d);N_GUARD,S_CUTR(g)::B(C)
    • P(h);SBLOCK,XP(G)::QAB(B)
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • K(e);S_FLIGHT,XS(F)::QAB(B)
      • R(g);SBLOCK,XS(F)::QAR2(B)
      • S(d);N_GUARD,SBLOCK,XS(F)::B(C)
      • P(h);SBLOCK,XS(F)::QAR2(B)
      • P(h);SBLOCK,XP(G)::QAB(B)
      • B(a);N_GUARD::S(F),XB(a)
      • P(h);SBLOCK::S(E),XR(g)
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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).