MESON Chess Problem Database

Problem Display
PID: 109437 (b1Q1N3/5p2/5K2/N1PkP3/1n4R1/8/1n2P3/6b1 w - - 0 1)

Strebkovs, Andrejs

Vratnica-64, 2002

b1Q1N3/5p2/5K2/N1PkP3/1n4R1/8/1n2P3/6b1

#2

8 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bd4
      • 2.e4#
    • 1...Bxc5
      • 2.Sc7#
  • Tries
    • 1.Qc7?
      • threat
        • 2.Qd6#
      • 1...Bxc5
        • 2.Qxf7#
      • 1...Sc4!
    • 1.Qxa8+?
      • 1...Sc6
        • 2.Qxc6#
      • 1...Kxc5!
  • Keys
    • 1.Sb3!
      • threat
        • 2.Qd7#
      • 1...Bxc5
        • 2.Qxc5#
      • 1...Bd4
        • 2.Rxd4#
      • 1...Bc6
        • 2.Sc7#
      • 1...Sc4
        • 2.e4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(a);P_PINP(E),SBLOCK::P(A)
    • B(a);SBLOCK,XP(D)::S(H)
  • Tries
    • Try
      • Q(G);
      • Threat
        • QAR1(G)
      • Vars
        • B(a);SBLOCK,XP(D)::QAB(G),XP(e)
      • Refutation
        • S(b);
    • Try
      • Q(G);CHECK,XB(f)
      • Vars
        • S(c);N_GUARD,P_SPINS(c)::QAB1(G),XS(c)
      • Refutation
        • K(d);P-FLIGHT,XP(D)
  • Actual
    • S(C);
    • Threat
      • QAR2(G)
    • Vars
      • B(a);OGATE,XP(D)::QAR1(G),XB(a)
      • B(a);N_GUARD,P_PINP(E)::R1(B),XB(a)
      • B(f);SBLOCK::S(H)
      • S(b);SBLOCK::P(A)
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).