MESON Chess Problem Database

Problem Display
PID: 230971 (3Q1b2/1p3R2/b5n1/1qkPp3/P1N5/3p4/B1NP1K2/BR6 w - - 0 1)

Bourd, Evgeny

Kudesnik, 2013

3Q1b2/1p3R2/b5n1/1qkPp3/P1N5/3p4/B1NP1K2/BR6

#2

11 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc4
      • 2.Rc7#
    • 1...Qxb1
      • 2.Rc7#
    • 1...Qb2
      • 2.Rc7#
    • 1...Qb3
      • 2.Rc7#
    • 1...Qb4
      • 2.Rc7#
    • 1...Bd6
      • 2.Qxd6#
    • 1...Bh6
      • 2.Qd6#
    • 1...Bg7
      • 2.Qd6#
    • 1...Se7
      • 2.Qd6#
    • 1...e4
      • 2.Bd4#
  • Tries
    • 1.Sb4?
      • threat
        • 2.Sxd3#
      • 1...Qxc4
        • 2.Qc7#
      • 1...Qxb4
        • 2.Rc7#
      • 1...Qd7
        • 2.Qb6#
      • 1...Bd6
        • 2.Qxd6#
      • 1...Sf4
        • 2.Qxf8#
      • 1...e4!
  • Keys
    • 1.Sxe5!
      • threat
        • 2.Bd4#
      • 1...Qxa4
        • 2.Qb6#
      • 1...dxc2
        • 2.d4#
      • 1...Qd7
        • 2.Qb6#
      • 1...Qc4
        • 2.Rc7#
      • 1...Qb2
        • 2.Qc7#
      • 1...Qb4
        • 2.Qc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • Q(b);N_GUARD,XS(H)::R(J)
    • Q(b);N_GUARD,XR(B)::R(J)
    • Q(b);N_GUARD::R(J)
    • B(h);N_GUARD::QAB1(K),XB(h)
    • B(h);N_GUARD::QAB1(K)
    • S(f);S_CUTB(h)::QAB1(K)
    • P(d);N_GUARD::B(A)
  • Tries
    • Try
      • S(D);
      • Threat
        • S(D),XP(a)
      • Vars
        • Q(b);N_GUARD,XS(H)::QAR2(K)
        • Q(b);N_GUARD,XS(D)::R(J)
        • Q(b);N_GUARD::QAB1(K)
        • B(h);N_GUARD::QAB1(K),XB(h)
        • S(f);N_GUARD::QAB(K),XB(h)
      • Refutation
        • P(d);
  • Actual
    • S(H);XP(d)
    • Threat
      • B(A)
    • Vars
      • Q(b);N_GUARD,XP(G)::QAB1(K)
      • P(a);OGATE,XS(D)::P(E)
      • Q(b);N_GUARD::QAB1(K)
      • Q(b);N_GUARD::R(J)
      • Q(b);N_GUARD::QAR2(K)
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).