MESON Chess Problem Database

Problem Display
PID: 16169 (7q/NQ2pn1R/K1pkp3/p1r5/1PRbP3/2r2PNB/8/6B1 w - - 0 1)

Kavnatsky, Isaak

Promyshlyansky, GA

StrateGems, 2000

7q/NQ2pn1R/K1pkp3/p1r5/1PRbP3/2r2PNB/8/6B1

#2

11 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qe5
      • 2.Sc8#
    • 1...Re5
      • 2.Qxc6#
    • 1...Be5
      • 2.Bxc5#
      • 2.bxc5#
    • 1...Se5
      • 2.Qxe7#
    • 1...e5
      • 2.Qd7#
  • Keys
    • 1.Bh2!
      • threat
        • 2.Sf5#
      • 1...Ke5
        • 2.Sh5#
      • 1...Qe5
        • 2.Sc8#
      • 1...Re5
        • 2.Qxc6#
      • 1...Rf5
        • 2.Sxf5#
      • 1...Be5
        • 2.bxc5#
      • 1...Se5
        • 2.Qxe7#
      • 1...e5
        • 2.Qd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • Q(j);N_GUARD,SBLOCK::S(I)
    • R(d);N_GUARD,SBLOCK::QAR1(J),XP(e)
    • S(i);SBLOCK::QAB1(J),XP(h)
    • P(g);SBLOCK::QAR1(J)
  • Actual
    • B(A);
    • Threat
      • B(A)+S(C),DCHECK
    • Vars
      • K(f);S_FLIGHT::B(A)+S(C)
      • Q(j);N_GUARD,SBLOCK::S(I)
      • R(d);N_GUARD,SBLOCK::QAR1(J),XP(e)
      • R(d);::B(A)+S(C),DCHECK,XR(d)
      • B(b);N_GUARD,SBLOCK::P(E),XR(d)
      • S(i);SBLOCK::QAB1(J),XP(h)
      • P(g);SBLOCK::QAR1(J)
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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).