MESON Chess Problem Database

Problem Display
PID: 252987 (2B5/1p2B3/7b/2p1k1pp/2pp1p2/2N5/4N2K/6Q1 w - - 0 1)

Burmistrov, Sergey Gennadevich

Probleemblad, 1983

2B5/1p2B3/7b/2p1k1pp/2pp1p2/2N5/4N2K/6Q1

#2

6 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Bg7
      • 2.Qxg5#
    • 1...Bf8
      • 2.Qxg5#
    • 1...d3
      • 2.Qxc5#
    • 1...f3
      • 2.Qg3#
  • Tries
    • 1.Sc1?
      • threat
        • 2.Qe1#
      • 1...f3
        • 2.Qg3#
      • 1...d3
        • 2.Qxc5#
      • 1...dxc3!
    • 1.Sg3?
      • threat
        • 2.Qe1#
      • 1...fxg3+
        • 2.Qxg3#
      • 1...dxc3
        • 2.Qxc5#
      • 1...d3
        • 2.Qxc5#
      • 1...f3!
    • 1.Sxd4?
      • threat
        • 2.Sf3#
      • 1...cxd4
        • 2.Qe1#
      • 1...f3
        • 2.Qe3#
      • 1...g4!
    • 1.Bxc5?
      • threat
        • 2.Qxd4#
      • 1...dxc3
        • 2.Qd4#
      • 1...d3
        • 2.Qd4#
      • 1...Kf6!
    • 1.Qb1?
      • threat
        • 2.Qe4#
        • 2.Qf5#
      • 1...dxc3
        • 2.Qf5#
      • 1...d3!
    • 1.Qg2?
      • threat
        • 2.Qe4#
        • 2.Qd5#
      • 1...f3
        • 2.Qg3#
      • 1...dxc3!
  • Keys
    • 1.Sxf4!
      • threat
        • 2.Sg6#
      • 1...Kxf4
        • 2.Qg3#
      • 1...dxc3
        • 2.Qe3#
      • 1...gxf4
        • 2.Qe1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • B(h);N_GUARD::QAR2(A),XP(f)
    • P(b);OGATE::QAR2(A),XP(d)
    • P(c);OGATEB::QAB(A)
  • Tries
    • Try
      • S(B);
      • Threat
        • QAR(A)
      • Vars
        • P(c);OGATEB::QAB(A)
        • P(b);OGATE::QAR2(A),XP(d)
      • Refutation
        • P(b);XS(D)
    • Try
      • S(B);
      • Threat
        • QAR(A)
      • Vars
        • P(c);CHECK,OGATE,XS(B)::QAB(A),XP(c)
        • P(b);OGATE,XS(D)::QAR2(A),XP(d)
        • P(b);OGATE::QAR2(A),XP(d)
      • Refutation
        • P(c);
    • Try
      • S(B);XP(b)
      • Threat
        • S(B)
      • Vars
        • P(d);SBLOCK,XS(B)::QAR(A)
        • P(c);N_GUARD::QAR2(A)
      • Refutation
        • P(f);
    • Try
      • B(E);XP(d)
      • Threat
        • QAB1(A),XP(b)
      • Vars
        • P(b);XS(D)::QAB1(A)
        • P(b);::QAB1(A)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(b);XS(D)::QAR1(A)
      • Refutation
        • P(b);
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);OGATEB::QAB(A)
      • Refutation
        • P(b);XS(D)
  • Actual
    • S(B);XP(c)
    • Threat
      • S(B)
    • Vars
      • K(e);OGATEB,S_FLIGHT,XS(B)::QAB1(A)
      • P(b);N_GUARD,XS(D)::QAR2(A)
      • P(f);SBLOCK,XS(B)::QAR(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).