MESON Chess Problem Database

Problem Display
PID: 105551 (1br4N/5QNb/2p2Bpk/5p2/6p1/6p1/8/1K6 w - - 0 1)

Kichigin, Viktor Vladimirovich

Umenie 64, 2003

1br4N/5QNb/2p2Bpk/5p2/6p1/6p1/8/1K6

#2

5 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bg8
      • 2.Qxg6#
    • 1...g5
      • 2.Qh5#
  • Tries
    • 1.Sxf5+?
      • 1...Kh5
        • 2.Qxh7#
      • 1...gxf5!
    • 1.Qe8?
      • threat
        • 2.Sf7#
      • 1...Bg8
        • 2.Qxg6#
      • 1...g5
        • 2.Qh5#
      • 1...Rc7!
    • 1.Qe7?
      • threat
        • 2.Sf7#
        • 2.Bg5#
      • 1...Rxh8
        • 2.Bg5#
      • 1...Rf8
        • 2.Bg5#
      • 1...Bf4
        • 2.Sf7#
      • 1...g5
        • 2.Bxg5#
      • 1...Bg8!
  • Keys
    • 1.Qd5!
      • threat
        • 2.Sf7#
        • 2.Qh1#
      • 1...Rxh8
        • 2.Qh1#
      • 1...cxd5
        • 2.Sf7#
      • 1...Bg8
        • 2.Qh1#
      • 1...Rc7
        • 2.Qh1#
      • 1...Rf8
        • 2.Qh1#
      • 1...g2
        • 2.Sf7#
      • 1...g5
        • 2.Qh1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • B(g);N_GUARD::QAR1(C),XP(e)
    • P(e);OGATE::QAR1(C)
  • Tries
    • Try
      • S(D);CHECK,XP(c)
      • Vars
        • K(f);P-FLIGHT,P_SPINP(e)::QAR2(C),XB(g)
      • Refutation
        • P(e);XS(D)
    • Try
      • Q(C);
      • Threat
        • S(E)
      • Vars
        • B(g);N_GUARD::QAR1(C),XP(e)
        • P(e);OGATE::QAR1(C)
      • Refutation
        • R(i);
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • R(i);XS(E)::B(B)
        • R(i);::B(B)
        • B(h);::S(E)
        • P(e);::B(B),XP(e)
      • Refutation
        • B(g);
  • Actual
    • Q(C);
    • Threat
      • DUALS(2)
    • Vars
      • R(i);XS(E)::QAR(C)
      • P(d);XQ(C)::S(E)
      • B(g);::QAR(C)
      • R(i);::QAR(C)
      • P(a);::S(E)
      • P(e);::QAR(C)
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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).