MESON Chess Problem Database

Problem Display
PID: 266537 (bnN5/rQn1p3/1p3P1p/4k1bR/2P3B1/pKPprRP1/8/8 w - - 0 1)

Ellerman, Arnoldo

Probleemblad, 1950

bnN5/rQn1p3/1p3P1p/4k1bR/2P3B1/pKPprRP1/8/8

#2

10 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Se6
      • 2.Rf5#
    • 1...exf6
      • 2.Rxe3#
  • Keys
    • 1.Qxb6!
      • threat
        • 2.Qd4#
      • 1...Ke4
        • 2.Qd4#
      • 1...Re4
        • 2.Rf5#
      • 1...Rb7
        • 2.Rxe3#
      • 1...Sb5
        • 2.Qe6#
      • 1...Se6
        • 2.Qxe6#
      • 1...Sc6
        • 2.Qxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • S(i);SBLOCK::R1(C)
    • P(j);SBLOCK,XP(H)::R(C),XR(c)
  • Actual
    • Q(I);XP(f)
    • Threat
      • QAB1(I)
    • Vars
      • K(d);N_SPINB(e),P-FLIGHT::QAR1(I)
      • R(c);SBLOCK::R1(C)
      • R(h);P_PINQ(I),S_CUTB(k)::R(C),XR(c)
      • S(i);N_GUARD::QAR1(I)
      • S(i);N_GUARD::QAR1(I),XS(i)
      • S(l);S_CUTB(k)::QAR2(I),XR(c)
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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).