MESON Chess Problem Database

Problem Display
PID: 249819 (2b2B2/1p2n3/3R4/QPP1p1b1/N1k1pn2/1p2P3/3P3K/3B4 w - - 0 1)

Chistyakov, Aleksandr N

Schweizerische Schachzeitung, 1996

2b2B2/1p2n3/3R4/QPP1p1b1/N1k1pn2/1p2P3/3P3K/3B4

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Se2
      • 2.Bxe2#
    • 1...Sg2
      • 2.Be2#
    • 1...Sh3
      • 2.Be2#
    • 1...Sfd5
      • 2.Be2#
    • 1...Sh5
      • 2.Be2#
    • 1...Se6
      • 2.Be2#
    • 1...Sfg6
      • 2.Be2#
  • Tries
    • 1.d4?
      • threat
        • 2.Sb2#
      • 1...Kd3
        • 2.Qc3#
      • 1...exd4
        • 2.Rxd4#
      • 1...Sd3
        • 2.Sb6#
      • 1...b2
        • 2.Sxb2#
      • 1...exd4 ep!
    • 1.b6?
      • threat
        • 2.Sb2#
      • 1...b2
        • 2.Sxb2#
      • 1...Sd3!
  • Keys
    • 1.Rd5!
      • threat
        • 2.Sb6#
      • 1...Kxd5
        • 2.Bxb3#
      • 1...Sfxd5
        • 2.Be2#
      • 1...Sexd5
        • 2.Sb2#
      • 1...b6
        • 2.Sxb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • S(d);N_GUARD::B(A),XS(d)
    • S(d);N_GUARD::B(A)
  • Tries
    • Try
      • P(B);
      • Threat
        • S(E)
      • Vars
        • K(b);N_GUARD,S_FLIGHT::QAR1(F)
        • P(e);OGATE,XP(B)::R1(I),XP(e)
        • S(d);SBLOCK::S(E)
        • P(a);::S(E),XP(a)
      • Refutation
        • P(c);EP,XP(B)
    • Try
      • P(G);
      • Threat
        • S(E)
      • Vars
        • P(a);::S(E),XP(a)
      • Refutation
        • S(d);
  • Actual
    • R(I);
    • Threat
      • S(E)
    • Vars
      • K(b);N_GUARD,S_FLIGHT,XR(I)::B(A),XP(a)
      • S(d);N_GUARD,SBLOCK,XR(I)::B(A)
      • S(h);SBLOCK,XR(I)::S(E)
      • P(g);::S(E),XP(g)
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).