MESON Chess Problem Database

Problem Display
PID: 238496 (1BR2bB1/4p3/K3pq2/1Ppk1nNR/1ppNbp2/2Pn4/6p1/3Q4 w - - 0 1)

Mosiashvili, Givi

Variantim, 2020

1BR2bB1/4p3/K3pq2/1Ppk1nNR/1ppNbp2/2Pn4/6p1/3Q4

#2

10 + 13

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd4
      • 2.Bxe6#
    • 1...Qxg5
      • 2.Bxe6#
    • 1...Qg7
      • 2.Bxe6#
    • 1...Qh8
      • 2.Bxe6#
    • 1...Bf3
      • 2.Qxf3#
    • 1...Se3
      • 2.Rd8#
    • 1...Sg3
      • 2.Rd8#
    • 1...Sxd4
      • 2.Rd8#
    • 1...Sh4
      • 2.Rd8#
    • 1...Sh6
      • 2.Rd8#
    • 1...Sg7
      • 2.Rd8#
  • Keys
    • 1.Sgxe6!
      • threat
        • 2.Rd8#
      • 1...Qxe6+
        • 2.Bxe6#
      • 1...Bf3
        • 2.Qxf3#
      • 1...Qe5
        • 2.Sxf4#
      • 1...Qg5
        • 2.Sxf4#
      • 1...Se5
        • 2.Rxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 9
  • Sets
    • Q(k);N_GUARD,XS(C)::B(J),XP(j)
    • Q(k);N_GUARD,XS(E)::B(J),XP(j)
    • Q(k);N_GUARD::B(J),XP(j)
    • B(e);OGATEB::QAB(A),XB(e)
    • S(i);N_GUARD::R(I)
    • S(i);N_GUARD,XS(C)::R(I)
  • Actual
    • S(E);P_PINS(i),P_SPINS(E),XP(j)
    • Threat
      • R(I)
    • Vars
      • Q(k);CHECK,OGATE,P_SPINQ(k),XS(E)::B(J),XQ(k)
      • B(e);OGATEB::QAB(A),XB(e)
      • Q(k);N_PINS(E),N_SPINS(i)::B(J)+S(E),DCHECK,XP(f)
      • S(b);N_GUARD,N_SPINS(i)::R1(I),XP(g)
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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).