MESON Chess Problem Database

Problem Display
PID: 262876 (8/8/8/4p3/5k1B/2N4P/Q1B5/3nN1Kb w - - 0 1)

Sychov, Vladimir Petrovich

Zadachi i Etyudi, 2008

8/8/8/4p3/5k1B/2N4P/Q1B5/3nN1Kb

#2

7 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Bd5
      • 2.Sxd5#
    • 1...Se3
      • 2.Se2#
  • Tries
    • 1.Sg2+?
      • 1...Kf3
        • 2.Bxd1#
        • 2.Be4#
        • 2.Qf7#
      • 1...Bxg2!
    • 1.Qc4+?
      • 1...Ke3
        • 2.Bg5#
      • 1...Be4
        • 2.Qxe4#
      • 1...e4!
    • 1.Qg8?
      • threat
        • 2.Qg3#
        • 2.Qg5#
      • 1...Be4
        • 2.Qg5#
      • 1...e4
        • 2.Qg5#
      • 1...Bf3
        • 2.Qg5#
      • 1...Ke3!
    • 1.Qa4+?
      • 1...Ke3
        • 2.Bg5#
      • 1...Be4
        • 2.Qxe4#
      • 1...e4!
  • Keys
    • 1.Qd5!
      • 1...Ke3
        • 2.Bg5#
      • 1...Bxd5
        • 2.Sxd5#
      • 1...Sxc3
        • 2.Qd2#
      • 1...Be4
        • 2.Qxe4#
      • 1...Bg2
        • 2.Sxg2#
      • 1...Bf3
        • 2.Qxf3#
      • 1...Sb2
        • 2.Qd2#
      • 1...Sf2
        • 2.Qd2#
      • 1...Se3
        • 2.Se2#
      • 1...e4
        • 2.Qg5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • B(b);N_GUARD::S(E),XB(b)
    • S(a);SBLOCK::S(E)
  • Tries
    • Try
      • S(A);CHECK
      • Refutation
        • B(b);XS(A)
    • Try
      • Q(C);CHECK
      • Vars
        • K(c);N_GUARD,S_FLIGHT::B(G)
        • B(b);N_GUARD,P_SPINB(b)::QAR1(C),XB(b)
      • Refutation
        • P(d);P_SPINP(d)
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • B(b);::QAB1(C)
        • P(d);::QAB1(C)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(c);N_GUARD,S_FLIGHT::B(G)
        • B(b);N_GUARD,P_SPINB(b)::QAR1(C),XB(b)
      • Refutation
        • P(d);P_SPINP(d)
  • Actual
    • Q(C);
    • Vars
      • K(c);N_GUARD,S_FLIGHT::B(G)
      • B(b);XQ(C)::S(E),XB(b)
      • S(a);N_GUARD,XS(E)::QAB(C)
      • B(b);N_GUARD::QAR1(C),XB(b)
      • B(b);N_GUARD::S(A),XB(b)
      • S(a);N_GUARD::QAB(C)
      • S(a);SBLOCK::S(E)
      • P(d);OGATE::QAB1(C)
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).