MESON Chess Problem Database

Problem Display
PID: 56495 (8/1p3p2/4p3/8/2p2N2/4kNKb/nRB1P3/1QR5 w - - 0 1)

Kostadinov, Diyan

StrateGems, 2005

8/1p3p2/4p3/8/2p2N2/4kNKb/nRB1P3/1QR5

#2

8 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Sxc1
      • 2.Qxc1#
  • Tries
    • 1.Sg2+?
      • 1...Kxe2
        • 2.Bb3#
        • 2.Bd3#
        • 2.Ba4#
        • 2.Be4#
        • 2.Bf5#
        • 2.Bg6#
        • 2.Bh7#
        • 2.Re1#
      • 1...Bxg2!
    • 1.Sd5+?
      • 1...Kxe2
        • 2.Bb3#
        • 2.Bd3#
        • 2.Ba4#
        • 2.Be4#
        • 2.Bf5#
        • 2.Bg6#
        • 2.Bh7#
        • 2.Re1#
      • 1...exd5!
    • 1.Bh7?
      • threat
        • 2.Qe4#
      • 1...Bf5
        • 2.Sg2#
      • 1...Sc3
        • 2.Rxc3#
      • 1...f5!
    • 1.Rh1?
      • threat
        • 2.Qg1#
      • 1...Sc1
        • 2.Qxc1#
      • 1...Bf1!
    • 1.Rxa2?
      • threat
        • 2.Qb6#
      • 1...b6
        • 2.Qxb6#
      • 1...b5!
  • Keys
    • 1.Bf5!
      • threat
        • 2.Qe4#
      • 1...Bxf5
        • 2.Sg2#
      • 1...exf5
        • 2.Sd5#
      • 1...Sc3
        • 2.Rxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • S(a);OGATE,XR(B)::QAB(A),XS(a)
  • Tries
    • Try
      • S(H);CHECK
      • Refutation
        • B(c);XS(H)
    • Try
      • S(H);CHECK
      • Refutation
        • P(e);XS(H)
    • Try
      • B(D);
      • Threat
        • QAR1(A)
      • Vars
        • B(c);N_GUARD::S(H)
        • S(a);N_GUARD::R(B),XS(a)
      • Refutation
        • P(g);
    • Try
      • R(B);
      • Threat
        • QAB(A)
      • Vars
        • S(a);N_GUARD::QAB(A),XS(a)
      • Refutation
        • B(c);
    • Try
      • R(C);XS(a)
      • Threat
        • QAB(A)
      • Vars
        • P(f);::QAB(A),XP(f)
      • Refutation
        • P(f);
  • Actual
    • B(D);
    • Threat
      • QAR1(A)
    • Vars
      • B(c);N_GUARD,XB(D)::S(H)
      • P(e);N_GUARD,XB(D)::S(H)
      • S(a);N_GUARD::R(B),XS(a)
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).