MESON Chess Problem Database

Problem Display
PID: 179167 (3N4/2qp4/3pP1p1/1pp2P2/2pkP2R/n7/B2P3Q/4N1K1 w - - 0 1)

Popovski, Aleksandr

Phenix, 2014

3N4/2qp4/3pP1p1/1pp2P2/2pkP2R/n7/B2P3Q/4N1K1

#2

10 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qa5
      • 2.Qxd6#
    • 1...Qxd8
      • 2.Qxd6#
    • 1...Qa7
      • 2.Qxd6#
    • 1...Qc8
      • 2.Qxd6#
    • 1...c3
      • 2.e5#
    • 1...d5
      • 2.e5#
    • 1...dxe6
      • 2.Sxe6#
  • Tries
    • 1.Qg3?
      • threat
        • 2.Qc3#
      • 1...Qa5
        • 2.Qxd6#
      • 1...Sb1
        • 2.Sc2#
      • 1...c3
        • 2.Qxc3#
        • 2.dxc3#
        • 2.e5#
      • 1...b4!
    • 1.exd7?
      • threat
        • 2.Se6#
      • 1...Qxd8
        • 2.Qxd6#
      • 1...Qxd7!
  • Keys
    • 1.Rg4!
      • threat
        • 2.Qh8#
      • 1...Qxd8
        • 2.Qxd6#
      • 1...dxe6
        • 2.Sxe6#
      • 1...d5
        • 2.e5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 4
  • Sets
    • Q(h);N_GUARD::QAR2(E),XP(f)
    • Q(h);N_GUARD,XS(J)::QAR2(E),XP(f)
    • P(b);::R(G)+P(F)
    • P(f);SBLOCK::R(G)+P(F)
    • P(i);XP(I)::S(J),XP(i)
  • Tries
    • Try
      • Q(E);
      • Threat
        • QAB1(E)
      • Vars
        • Q(h);N_GUARD::QAR2(E),XP(f)
        • S(a);N_GUARD::S(A)
      • Refutation
        • P(d);
    • Try
      • P(I);XP(i)
      • Threat
        • S(J)
      • Vars
        • Q(h);N_GUARD,XS(J)::QAR2(E),XP(f)
      • Refutation
        • Q(h);XP(I)
  • Actual
    • R(G);
    • Threat
      • QAB(E)
    • Vars
      • Q(h);N_GUARD,XS(J)::QAR2(E),XP(f)
      • P(i);XP(I)::S(J),XP(i)
      • P(f);SBLOCK::R(G)+P(F)
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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).