MESON Chess Problem Database

Problem Display
PID: 229177 (4R3/1p3p2/b7/2pQP3/1r1p2pr/N3k3/1pP1N1PP/1B2K3 w - - 0 1)

Elbogen, Arpad

Ujsag, 1926

4R3/1p3p2/b7/2pQP3/1r1p2pr/N3k3/1pP1N1PP/1B2K3

#2

10 + 10

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rb5
      • 2.Sc4#
    • 1...g3
      • 2.Qf3#
    • 1...c4
      • 2.Qxd4#
    • 1...f5
      • 2.exf5 ep#
    • 1...f6
      • 2.exf6#
  • Keys
    • 1.c4!
      • threat
        • 2.Qe4#
      • 1...dxc4 ep
        • 2.Sc2#
      • 1...d3
        • 2.Qxd3#
      • 1...g3
        • 2.Qf3#
      • 1...f5
        • 2.exf5 ep#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • R(c);N_GUARD,S_CUTB(h)::S(G)
    • P(e);N_GUARD::QAR1(H)
    • P(g);N_GUARD,S_CUTR(c)::QAB1(H),XP(d)
    • P(j);OGATE::R(J)+P(I),XP(j),EP
    • P(j);OGATE::R(J)+P(I),XP(j)
  • Actual
    • P(C);
    • Threat
      • QAR1(H)
    • Vars
      • P(d);EP,XP(C)::S(G)
      • P(d);OGATE::QAR1(H),XP(d)
      • P(e);N_GUARD::QAR1(H)
      • P(j);OGATE::R(J)+P(I),XP(j),EP
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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).