MESON Chess Problem Database

Problem Display
PID: 62735 (5r1b/p2p4/K1N5/3P1k2/p1P2pRB/2N2pnP/1Q3P2/4r3 w - - 0 1)

Ellerman, Arnoldo

Tijdschrift vd KNSB, 1951

5r1b/p2p4/K1N5/3P1k2/p1P2pRB/2N2pnP/1Q3P2/4r3

#2

10 + 10

45 Schach 1952

SOLUTION

  • SOUND
  • Sets
    • 1...Re5
      • 2.Sd4#
    • 1...Rf6
      • 2.Rg5#
    • 1...Be5
      • 2.Se7#
    • 1...Se2
      • 2.Qc2#
  • Keys
    • 1.Se4!
      • threat
        • 2.Sd6#
      • 1...Kxe4
        • 2.Qc2#
      • 1...Rxe4
        • 2.Rg5#
      • 1...Sxe4
        • 2.Se7#
      • 1...Rf6
        • 2.Qe5#
      • 1...Be5
        • 2.Qxe5#
      • 1...d6
        • 2.Sxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • R(a);SBLOCK,S_CUTB(j)::S(J)
    • R(i);P_PINS(J),SBLOCK::R1(F)
    • B(j);SBLOCK,S_CUTR(a)::S(J)
    • S(c);N_GUARD,S_CUTR(a)::QAB(A)
  • Actual
    • S(C);
    • Threat
      • S(C)
    • Vars
      • K(f);OGATEB,P_SPINP(e),S_FLIGHT,XS(C)::QAB(A)
      • R(a);SBLOCK,XS(C)::R1(F)
      • S(c);SBLOCK,XS(C)::S(J)
      • R(i);P_PINS(J),S_CUTB(j)::QAR1(A)
      • B(j);N_GUARD::QAR1(A),XB(j)
      • P(h);::S(C),XP(h)
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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).