MESON Chess Problem Database

Problem Display
PID: 240044 (3Nb3/2PnknP1/2P1p2p/K2pP1Pq/5NB1/3Q4/8/8 w - - 0 1)

Mosiashvili, Givi

64 Shakhmatnoe obozrenie, 1999

3Nb3/2PnknP1/2P1p2p/K2pP1Pq/5NB1/3Q4/8/8

#2

10 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qxg4
      • 2.Sg6#
    • 1...Qg6
      • 2.Sxg6#
    • 1...Qh1
      • 2.Sg6#
    • 1...Qh2
      • 2.Sg6#
    • 1...Qh3
      • 2.Sg6#
    • 1...Qh4
      • 2.Sg6#
    • 1...Sf6
      • 2.gxf6#
    • 1...Sf8
      • 2.g8S#
  • Tries
    • 1.Sfxe6?
      • threat
        • 2.c8S#
        • 2.g8S#
      • 1...Qxg5
        • 2.c8S#
      • 1...Sdxe5
        • 2.c8S#
      • 1...Sfxe5
        • 2.c8S#
      • 1...Qg6
        • 2.c8S#
      • 1...Sb6
        • 2.g8S#
      • 1...Sf6
        • 2.gxf6#
        • 2.c8S#
      • 1...Sd6
        • 2.g8S#
      • 1...Sxd8!
    • 1.Qa3+?
      • 1...Sd6
        • 2.Qxd6#
        • 2.exd6#
      • 1...Sc5!
    • 1.Qxd5?
      • threat
        • 2.Qxe6#
      • 1...Qxg4
        • 2.Sg6#
      • 1...Sxg5
        • 2.Qd6#
      • 1...exd5
        • 2.Sxd5#
      • 1...Qg6
        • 2.Sxg6#
      • 1...Sc5
        • 2.c8S#
      • 1...Sf8
        • 2.c8S#
        • 2.g8S#
      • 1...Sxd8!
  • Keys
    • 1.Qf5!
      • threat
        • 2.Qxe6#
      • 1...Qxg4
        • 2.Sg6#
      • 1...Sxg5
        • 2.g8S#
      • 1...Sxd8
        • 2.c8S#
        • 2.g8S#
      • 1...exf5
        • 2.Sxd5#
      • 1...Qg6
        • 2.Sxg6#
      • 1...Sc5
        • 2.Qf6#
      • 1...Sf8
        • 2.Qf6#
        • 2.g8S#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • Q(b);N_GUARD,XB(C)::S(B)
    • Q(b);N_GUARD::S(B),XQ(b)
    • Q(b);N_GUARD::S(B)
    • S(e);OGATE::P(F),XS(e)
    • S(e);SBLOCK::P=S
  • Tries
    • Try
      • S(B);XP(c)
      • Threat
        • DUALS(2)
      • Vars
        • Q(b);XP(F)::P=S
        • S(e);XP(E)::P=S
        • S(g);XP(E)::P=S
        • Q(b);::P=S
        • S(e);::P=S
        • S(g);::P=S
      • Refutation
        • S(g);XS(J)
    • Try
      • Q(A);CHECK
      • Refutation
        • S(e);P_SPINS(e)
    • Try
      • Q(A);XP(a)
      • Threat
        • QAR1(A),XP(c)
      • Vars
        • Q(b);N_GUARD,XB(C)::S(B)
        • S(g);N_GUARD,XP(F)::QAB1(A)
        • P(c);XQ(A)::S(B),XP(c)
        • Q(b);N_GUARD::S(B),XQ(b)
        • S(e);::P=S
      • Refutation
        • S(g);XS(J)
  • Actual
    • Q(A);
    • Threat
      • QAR1(A),XP(c)
    • Vars
      • Q(b);N_GUARD,XB(C)::S(B)
      • S(g);XP(F)::P=S
      • P(c);N_GUARD,XQ(A)::S(B),XP(a)
      • Q(b);N_GUARD::S(B),XQ(b)
      • S(e);N_GUARD::QAB1(A)
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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).