MESON Chess Problem Database

Problem Display
PID: 80118 (4Q1K1/1B6/1p1N1p2/5pp1/1P1k1np1/5n1R/1PPpp2B/3rr3 w - - 0 1)

Janevski, Zivko

Probleemblad, 2008

4Q1K1/1B6/1p1N1p2/5pp1/1P1k1np1/5n1R/1PPpp2B/3rr3

#2

9 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Sg1
      • 2.Qe3#
      • 2.c3#
    • 1...Sxh2
      • 2.Qe3#
      • 2.c3#
    • 1...Sh4
      • 2.Qe3#
      • 2.c3#
    • 1...Se5
      • 2.c3#
    • 1...Sd3
      • 2.c3#
  • Tries
    • 1.Bg1+?
      • 1...Sxg1
        • 2.Qe3#
        • 2.c3#
      • 1...Rxg1!
    • 1.Bxf4?
      • threat
        • 2.Be3#
        • 2.Qe3#
      • 1...Se5
        • 2.Be3#
        • 2.c3#
      • 1...gxf4!
    • 1.Rxf3?
      • threat
        • 2.Qe3#
        • 2.c3#
      • 1...Rc1
        • 2.Qe3#
      • 1...Sg2
        • 2.Rd3#
        • 2.c3#
      • 1...Sd5
        • 2.Rd3#
      • 1...Se6
        • 2.Rd3#
        • 2.c3#
      • 1...gxf3!
    • 1.Qc6?
      • threat
        • 2.Qc3#
      • 1...Ke3
        • 2.Qxb6#
      • 1...Ke5
        • 2.Qd5#
      • 1...Sd3
        • 2.Sxf5#
      • 1...Sd5!
  • Keys
    • 1.Qb5!
      • threat
        • 2.Sxf5#
      • 1...Ke3
        • 2.Qxb6#
      • 1...Sh4
        • 2.c3#
      • 1...Sd5
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • S(e);::P(B)
    • S(g);SBLOCK::P(B)
  • Tries
    • Try
      • B(C);CHECK
      • Refutation
        • R(b);XB(C)
    • Try
      • B(C);XS(g)
      • Threat
        • DUALS(2)
      • Refutation
        • P(j);XB(C)
    • Try
      • R(D);XS(e)
      • Threat
        • DUALS(2)
      • Vars
        • R(a);::QAB1(H)
        • S(g);N_GUARD::R1(D)
      • Refutation
        • P(h);XR(D)
    • Try
      • Q(H);
      • Threat
        • QAB1(H)
      • Vars
        • K(f);P_SPINS(e),S_FLIGHT::QAB(H),XP(k)
        • K(f);P_SPINS(g),S_FLIGHT::QAR1(H)
        • S(g);::S(F),XP(i)
      • Refutation
        • S(g);
  • Actual
    • Q(H);
    • Threat
      • S(F),XP(i)
    • Vars
      • K(f);P_SPINS(e),S_FLIGHT::QAB(H),XP(k)
      • S(e);::P(B)
      • S(g);N_GUARD::QAR1(H)
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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).