MESON Chess Problem Database

Problem Display
PID: 117130 (B2qR3/5N2/1B6/2rP1N1K/7p/2prPk1p/2Q2n1P/6R1 w - - 0 1)

Kubbel, Leonid Ivanovich (AKA Kubbel, Karl Artur Leonid)

Nigiedavarkoso Chess Club, 1929

B2qR3/5N2/1B6/2rP1N1K/7p/2prPk1p/2Q2n1P/6R1

#2

11 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qg5+
      • 2.Sxg5#
    • 1...Qxb6
      • 2.Sxh4#
      • 2.Sg5#
    • 1...Qc7
      • 2.Sxh4#
      • 2.Sg5#
    • 1...Qxd5
      • 2.Sg5#
    • 1...Qd6
      • 2.Sxh4#
      • 2.Sg5#
    • 1...Qd7
      • 2.Sxh4#
      • 2.Sg5#
    • 1...Qxa8
      • 2.Sxh4#
      • 2.Sg5#
    • 1...Qb8
      • 2.Sxh4#
      • 2.Sg5#
    • 1...Qc8
      • 2.Sxh4#
      • 2.Sg5#
    • 1...Rd1
      • 2.Se5#
    • 1...Rd4
      • 2.Sxd4#
      • 2.Se5#
    • 1...Rdxd5
      • 2.Se5#
    • 1...Se4
      • 2.Se5#
  • Keys
    • 1.Sg3!
      • threat
        • 2.Qe2#
      • 1...Qg5+
        • 2.Sxg5#
      • 1...Qxd5+
        • 2.Sg5#
      • 1...Rdxd5+
        • 2.Qf5#
      • 1...Rcxd5+
        • 2.Se5#
      • 1...Rxe3
        • 2.Qf5#
      • 1...hxg3
        • 2.Rxg3#
      • 1...Rd2
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • Q(h);CHECK,N_GUARD::S(I),XQ(h)
    • Q(h);N_GUARD,P_PINS(F),P_SPINQ(h),XP(E)::S(I)
    • R(c);::S(I)
    • R(c);P_PINS(F),P_SPINR(c),XP(E)::S(I)
    • S(a);SBLOCK::S(I)
  • Actual
    • S(F);P_SPINP(E)
    • Threat
      • QAB1(B)
    • Vars
      • Q(h);CHECK,N_GUARD,N_PINP(E)::S(I),XQ(h)
      • Q(h);CHECK,N_GUARD,P_SPINQ(h),XP(E)::S(I)
      • R(c);CHECK,OGATE,P_SPINR(c),XP(E)::QAR2(B)
      • R(g);CHECK,P_SPINR(g),XP(E)::S(I)
      • R(c);OGATE,XP(D)::QAR2(B)
      • P(f);OGATE,XS(F)::R1(A),XP(f)
      • R(c);OGATE::QAR2(B)
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).