MESON Chess Problem Database

Problem Display
PID: 200577 (2R5/3N2B1/K2p1n2/1p3NQ1/1k6/pP3r1R/p7/1n1B3b w - - 0 1)

Eyjolfsson, Eyjolfur

The Problemist, 1983

2R5/3N2B1/K2p1n2/1p3NQ1/1k6/pP3r1R/p7/1n1B3b

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...d5
      • 2.Bf8#
  • Tries
    • 1.Se3?
      • threat
        • 2.Qxb5#
      • 1...Rf5
        • 2.Sc2#
      • 1...Sd5
        • 2.Sxd5#
      • 1...d5
        • 2.Bf8#
      • 1...Sc3!
    • 1.Qf4+?
      • 1...Se4
        • 2.Qxe4#
      • 1...Rxf4!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Qxb5#
      • 1...Sc3
        • 2.Sc6#
      • 1...Rf5
        • 2.Sc2#
      • 1...Sd5
        • 2.Sc6#
      • 1...d5
        • 2.Bf8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(h);OGATEB::B(H)
  • Tries
    • Try
      • S(D);
      • Threat
        • QAR1(E),XP(g)
      • Vars
        • R(e);::S(D)
        • S(i);N_GUARD::S(D),XS(i)
        • P(h);OGATEB::B(H)
      • Refutation
        • S(a);
    • Try
      • Q(E);CHECK
      • Vars
        • S(i);N_GUARD,P_SPINS(i)::QAR(E),XS(i)
      • Refutation
        • R(e);XQ(E)
  • Actual
    • S(D);
    • Threat
      • QAR1(E),XP(g)
    • Vars
      • S(a);SBLOCK::S(D)
      • R(e);::S(D)
      • S(i);::S(D)
      • P(h);OGATEB::B(H)
HTML5 logo

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).