MESON Chess Problem Database

Problem Display
PID: 249436 (rb3Qn1/4pNNK/5k2/3p1p2/3n4/qpB4R/8/8 w - - 0 1)

Pimenov, Sergey Ivanovich

Pimenov, Vitaly Ivanovich

Die Schwalbe, 1929

rb3Qn1/4pNNK/5k2/3p1p2/3n4/qpB4R/8/8

#2

6 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Sh6
      • 2.Rxh6#
    • 1...e6
      • 2.Sh5#
      • 2.Se8#
  • Tries
    • 1.Bxd4+?
      • 1...Be5
        • 2.Bxe5#
      • 1...e5!
  • Keys
    • 1.Rh5!
      • threat
        • 2.Rxf5#
      • 1...Be5
        • 2.Sd8#
      • 1...Sh6
        • 2.Rxh6#
      • 1...f4
        • 2.Se5#
        • 2.Sd6#
        • 2.Sh6#
        • 2.Sd8#
        • 2.Sh8#
        • 2.Rf5#
      • 1...e5
        • 2.Sd6#
      • 1...e6
        • 2.Se8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(j);N_GUARD::R(B),XS(j)
  • Tries
    • Try
      • B(A);CHECK,XS(c)
      • Vars
        • B(i);N_GUARD,P_SPINB(i)::B(A),XB(i)
      • Refutation
        • P(g);P_SPINP(g)
  • Actual
    • R(B);
    • Threat
      • R1(B),XP(e)
    • Vars
      • B(i);N_SPINS(c),SBLOCK::QAR(F)+S(C)
      • S(j);N_GUARD::R(B),XS(j)
      • P(g);N_SPINS(c),SBLOCK::QAR(F)+S(C)
      • P(g);SBLOCK::S(D)
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).