MESON Chess Problem Database

Problem Display
PID: 254632 (3K1R2/1pp1N3/4kB2/1nPN3p/7p/3r3r/Q6b/1b6 w - - 0 1)

Ellerman, Arnoldo

Probleemblad, 1946

3K1R2/1pp1N3/4kB2/1nPN3p/7p/3r3r/Q6b/1b6

#2

7 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Ra3
      • 2.Sf4#
      • 2.Sxc7#
    • 1...Rc3
      • 2.Sf4#
      • 2.Sxc7#
    • 1...Rde3
      • 2.Sf4#
      • 2.Sxc7#
    • 1...Rdf3
      • 2.Sf4#
      • 2.Sxc7#
    • 1...Rdg3
      • 2.Sf4#
      • 2.Sxc7#
    • 1...Rxd5+
      • 2.Qxd5#
    • 1...Bd6
      • 2.Sf4#
      • 2.Sxc7#
    • 1...Sd4
      • 2.Sf4#
      • 2.Sxc7#
    • 1...Sd6
      • 2.Sf4#
      • 2.Sxc7#
  • Keys
    • 1.Qg2!
      • threat
        • 2.Qg8#
      • 1...Rxd5+
        • 2.Qxd5#
      • 1...Rdg3
        • 2.Sf4#
      • 1...Rhg3
        • 2.Qe4#
      • 1...Bg3
        • 2.Qxh3#
      • 1...Sd6
        • 2.Sxc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • R(c);CHECK,OGATE,P_SPINR(c),XS(C)::QAB1(A),XR(c)
  • Actual
    • Q(A);
    • Threat
      • QAB(A)
    • Vars
      • R(c);CHECK,OGATE,XS(C)::QAB1(A),XR(c)
      • R(c);N_PINS(C)::S(C)
      • R(d);S_CUTB(b)::QAR2(A)
      • B(b);S_CUTR(c)::QAB(A),XR(d)
      • S(f);N_PINS(C)::S(C),XP(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).