MESON Chess Problem Database

Problem Display
PID: 93774 (1K2N1b1/1p5n/4PB2/3p1k1B/Q4P2/1p2p1pn/3PN1P1/5r2 w - - 0 1)

Jancek, Jan

Sachove umeni (Ceskoslovensky sach), 1953

1K2N1b1/1p5n/4PB2/3p1k1B/Q4P2/1p2p1pn/3PN1P1/5r2

#2

10 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe6
      • 2.Sd4#
    • 1...Bxe6
      • 2.Sxg3#
    • 1...Sxf6
      • 2.Sg7#
  • Tries
    • 1.Qd4?
      • threat
        • 2.Sg7#
        • 2.Qe5#
        • 2.Qxd5#
      • 1...Bxe6
        • 2.Sxg3#
        • 2.Sd6#
        • 2.Sg7#
        • 2.Qe5#
        • 2.Qd3#
      • 1...Sxf4
        • 2.Sg7#
        • 2.Qe5#
      • 1...Sxf6
        • 2.Sg7#
        • 2.Qe5#
      • 1...Kxe6!
    • 1.Qe4+?
      • 1...Kxe4
        • 2.Bg6#
      • 1...dxe4!
  • Keys
    • 1.Qd7!
      • threat
        • 2.Qxd5#
      • 1...Ke4
        • 2.Bg6#
      • 1...Bxe6
        • 2.Qxh7#
      • 1...Sxf4
        • 2.Sxg3#
      • 1...Sxf6
        • 2.Sd6#
      • 1...d4
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • K(g);S_FLIGHT,XP(G)::S(B)
    • B(j);SBLOCK,XP(G)::S(B),XP(d)
    • S(i);SBLOCK,XB(H)::S(J)
  • Tries
    • Try
      • Q(D);
      • Threat
        • DUALS(3)
      • Refutation
        • K(g);S_FLIGHT,XP(G)
    • Try
      • Q(D);CHECK
      • Vars
        • K(g);S_FLIGHT,XQ(D)::B(F)
      • Refutation
        • P(f);XQ(D)
  • Actual
    • Q(D);
    • Threat
      • QAR2(D),XP(f)
    • Vars
      • K(g);S_FLIGHT::B(F)
      • B(j);N_GUARD,P_SPINB(j),SBLOCK,XP(G)::QAB(D),XS(i)
      • S(e);SBLOCK,XP(E)::S(B),XP(d)
      • S(i);SBLOCK,XB(H)::S(J)
      • P(f);::QAR2(D)
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).