MESON Chess Problem Database

Problem Display
PID: 71345 (3RnNB1/Kpp5/2P2p2/2k5/Qp1p3R/b2rr3/2Pn4/6B1 w - - 0 1)

Boros, Sandor

8th Prize, L'Echiquier TT, 1936-1937

3RnNB1/Kpp5/2P2p2/2k5/Qp1p3R/b2rr3/2Pn4/6B1

#2

9 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Sc4
      • 2.Rd5#
    • 1...Sd6
      • 2.Sd7#
    • 1...b3
      • 2.Rd5#
    • 1...bxc6
      • 2.Qa5#
  • Tries
    • 1.Qa5+?
      • 1...Kxc6
        • 2.Bd5#
        • 2.Qd5#
      • 1...b5!
  • Keys
    • 1.c4!
      • threat
        • 2.Qb5#
      • 1...Sxc4
        • 2.Rd5#
      • 1...bxc6
        • 2.Qa5#
      • 1...bxc4 ep
        • 2.Rd5#
      • 1...dxc4 ep
        • 2.Se6#
      • 1...b5
        • 2.Qxb5#
      • 1...Sd6
        • 2.Sd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • S(a);SBLOCK::R1(G)
    • S(k);SBLOCK::S(H)
    • P(e);::R1(G)
    • P(i);N_GUARD,SBLOCK,XP(E)::QAR2(C)
  • Tries
    • Try
      • Q(C);CHECK
      • Refutation
        • P(i);P_SPINP(i)
  • Actual
    • P(B);
    • Threat
      • QAR1(C)
    • Vars
      • S(a);SBLOCK,XP(B)::R1(G)
      • P(i);N_GUARD,SBLOCK,XP(E)::QAR2(C)
      • P(e);EP,XP(B)::R1(G)
      • P(f);EP,P_SPINR(d),XP(B)::S(H)
      • P(i);::QAR1(C),XP(i)
      • S(k);SBLOCK::S(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).