MESON Chess Problem Database

Problem Display
PID: 248113 (b2Q4/K1p1R3/pp2P1q1/2n1k1Pp/r2pNR2/r5P1/3n4/4N2B w - - 0 1)

Ellerman, Arnoldo

Comm., White MT (A), 1952-1953

b2Q4/K1p1R3/pp2P1q1/2n1k1Pp/r2pNR2/r5P1/3n4/4N2B

#2

10 + 12

14867 BCPS Library 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bd5
      • 2.Qxc7#
    • 1...Sdb3
      • 2.Sf3#
    • 1...Scb3
      • 2.Sd3#
    • 1...c6
      • 2.Qd6#
  • Keys
    • 1.Sc3!
      • threat
        • 2.Qxc7#
      • 1...Sc4
        • 2.Qxd4#
      • 1...Sde4
        • 2.Sf3#
      • 1...Sce4
        • 2.Sd3#
      • 1...Sb7
        • 2.Qd5#
      • 1...c6
        • 2.Qc7#
        • 2.Qb8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • B(l);SBLOCK::QAB(J),XP(k)
    • S(a);N_GUARD,S_CUTR(b)::S(A)
    • S(e);N_GUARD,S_CUTR(b)::S(A)
    • P(k);N_GUARD::QAB1(J)
  • Actual
    • S(D);
    • Threat
      • QAB(J),XP(k)
    • Vars
      • S(a);S_CUTR(c)::QAB1(J),XP(d)
      • S(a);N_GUARD,S_CUTB(l)::S(A)
      • S(e);N_GUARD,S_CUTQ(j)::S(A)
      • S(e);S_CUTB(l)::QAR1(J)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).