MESON Chess Problem Database

Problem Display
PID: 179212 (7n/8/4Q1p1/3P2P1/q3Npp1/3PpkP1/3PNp2/2n2B1K w - - 0 1)

Janevski, Zivko

3rd Prize, Phenix, 2015

7n/8/4Q1p1/3P2P1/q3Npp1/3PpkP1/3PNp2/2n2B1K

#2

10 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qd1
      • 2.Sd4#
    • 1...Qc2
      • 2.Sd4#
    • 1...Qb3
      • 2.Sd4#
    • 1...Qb5
      • 2.Sd4#
    • 1...Qc6
      • 2.Sd4#
    • 1...Qd7
      • 2.Sd4#
    • 1...Qe8
      • 2.Sd4#
    • 1...Qa2
      • 2.Sd4#
    • 1...Qa3
      • 2.Sd4#
    • 1...Qd4
      • 2.Sxd4#
    • 1...Qxe4
      • 2.Qxe4#
    • 1...Qa5
      • 2.Sd4#
    • 1...Qa6
      • 2.Sd4#
    • 1...Qa8
      • 2.Sd4#
    • 1...Sxe2
      • 2.Bg2#
    • 1...exd2
      • 2.Sxd2#
    • 1...fxg3
      • 2.Qf6#
  • Tries
    • 1.S4c3?
      • threat
        • 2.Bg2#
      • 1...Qd1
        • 2.Qe4#
      • 1...Sxe2!
    • 1.Qe5?
      • threat
        • 2.Qxf4#
      • 1...Qxe4
        • 2.Qxe4#
      • 1...Sxe2
        • 2.Bg2#
      • 1...fxg3
        • 2.Qxg3#
        • 2.Qf4#
        • 2.Qf6#
      • 1...Sxd3!
  • Keys
    • 1.Sf6!
      • threat
        • 2.Qxg4#
      • 1...exd2
        • 2.Bg2#
      • 1...fxg3
        • 2.Qxe3#
      • 1...Qd7
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 0
    • REMOVED MATES = 14
  • Sets
    • Q(e);N_GUARD,P_PINB(A)::S(D)
    • Q(e);N_GUARD::S(D)
    • Q(e);N_GUARD::S(D),XQ(e)
    • Q(e);OGATE,XS(G)::QAB1(J),XQ(e)
    • S(a);SBLOCK,XS(D)::B(A)
    • P(c);XP(C)::S(G),XP(c)
    • P(f);OGATEB,XP(F)::QAR(J)
  • Tries
    • Try
      • S(G);
      • Threat
        • B(A)
      • Vars
        • Q(e);N_GUARD,P_PINB(A)::QAB1(J)
      • Refutation
        • S(a);XS(D)
    • Try
      • Q(J);
      • Threat
        • QAR1(J),XP(f)
      • Vars
        • Q(e);OGATE,XS(G)::QAB1(J),XQ(e)
        • S(a);SBLOCK,XS(D)::B(A)
      • Refutation
        • S(a);XP(E)
  • Actual
    • S(G);
    • Threat
      • QAB1(J),XP(g)
    • Vars
      • P(c);XP(C)::B(A)
      • P(f);N_GUARD,XP(F)::QAR1(J),XP(c)
      • Q(e);N_GUARD::QAB1(J)
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).