MESON Chess Problem Database

Problem Display
PID: 79695 (bn3B2/2N2R2/8/2ppk2p/1n4p1/1NP1PP1B/8/b6K w - - 0 1)

Bantysh, Nikolai Ivanovich

The Problemist, 2008

bn3B2/2N2R2/8/2ppk2p/1n4p1/1NP1PP1B/8/b6K

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...g3
      • 2.Rf5#
  • Tries
    • 1.Sd2?
      • threat
        • 2.f4#
      • 1...gxf3
        • 2.Rf5#
      • 1...d4
        • 2.Sc4#
      • 1...Sd3!
    • 1.Sd4?
      • threat
        • 2.Rf5#
      • 1...cxd4
        • 2.exd4#
      • 1...gxf3!
    • 1.e4?
      • threat
        • 2.Rf5#
      • 1...dxe4
        • 2.f4#
      • 1...gxf3!
  • Keys
    • 1.Sxc5!
      • threat
        • 2.f4#
      • 1...gxf3
        • 2.Rf5#
      • 1...Sd3
        • 2.Sxd3#
      • 1...d4
        • 2.exd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • P(c);::R1(H)
  • Tries
    • Try
      • S(B);
      • Threat
        • P(E)
      • Vars
        • P(c);XP(E)::R1(H)
        • P(e);N_GUARD,P_PINP(E)::S(B)
      • Refutation
        • S(b);
    • Try
      • S(B);
      • Threat
        • R1(H)
      • Vars
        • P(d);OGATE,XS(B)::P(D),XP(d)
      • Refutation
        • P(c);XP(E)
    • Try
      • P(D);
      • Threat
        • R1(H)
      • Vars
        • P(e);SBLOCK,XP(D)::P(E)
      • Refutation
        • P(c);XP(E)
  • Actual
    • S(B);XP(d)
    • Threat
      • P(E)
    • Vars
      • P(c);XP(E)::R1(H)
      • S(b);N_GUARD::S(B),XS(b)
      • P(e);OGATE,P_PINP(E)::P(D),XP(e)
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).