MESON Chess Problem Database

Problem Display
PID: 137490 (8/qp1Q3K/r3R1P1/1p2N3/2P5/2Npk1P1/3p1p2/B3nB1b w - - 0 1)

Ellerman, Arnoldo

Problem (Zagreb), 1966

8/qp1Q3K/r3R1P1/1p2N3/2P5/2Npk1P1/3p1p2/B3nB1b

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Bf3
      • 2.Sg4#
    • 1...Be4
      • 2.Sd1#
    • 1...Sc2
      • 2.Qxd3#
    • 1...Sg2
      • 2.Qxd3#
    • 1...Sf3
      • 2.Sg4#
      • 2.Qxd3#
  • Keys
    • 1.Qf7!
      • threat
        • 2.Qf4#
      • 1...Kd4
        • 2.Qxf2#
      • 1...Qd4
        • 2.Sg4#
      • 1...Be4
        • 2.Sd1#
      • 1...Sg2
        • 2.Sc6#
      • 1...b6
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • B(b);SBLOCK::R(G)+S(F),DCHECK
    • B(b);P_PINP(H),SBLOCK::S(C)
    • S(a);N_GUARD::QAR1(I),XP(e)
  • Actual
    • Q(I);
    • Threat
      • QAB1(I)
    • Vars
      • K(f);S_FLIGHT::QAB(I),XP(d)
      • Q(i);SBLOCK::R(G)+S(F),DCHECK
      • B(b);P_PINP(H),SBLOCK::S(C)
      • S(a);S_CUTB(b)::R(G)+S(F)
      • P(j);P_PINQ(I),S_CUTR(h)::R(G)+S(F)
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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).