MESON Chess Problem Database

Problem Display
PID: 71666 (7q/2B5/Q5N1/3k1r1R/1P1pr1bb/1R2pnp1/4N3/3K3B w - - 0 1)

Gugel, Lev Nikolaevich

1st Prize, 64 Shakhmatnoe obozrenie, 1924

7q/2B5/Q5N1/3k1r1R/1P1pr1bb/1R2pnp1/4N3/3K3B

#2

9 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Se1
      • 2.Sf4#
    • 1...Sg1
      • 2.Sf4#
    • 1...Sd2
      • 2.Sf4#
    • 1...Sh2
      • 2.Sf4#
    • 1...Sg5
      • 2.Se7#
  • Keys
    • 1.Rd3!
      • threat
        • 2.Sc3#
      • 1...Se1
        • 2.Sf4#
      • 1...Sg1
        • 2.Sf4#
      • 1...Sd2
        • 2.Sf4#
      • 1...Sh2
        • 2.Sf4#
      • 1...Se5
        • 2.Rxd4#
      • 1...Sg5
        • 2.Se7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(b);N_SPINR(i),P_PINS(C),P_SPINR(e)::S(H)
    • S(b);N_SPINR(i),P_PINS(C),P_SPINR(e),S_CUTB(g)::S(H)
  • Actual
    • R(D);P_PINP(d)
    • Threat
      • S(C)
    • Vars
      • S(b);N_SPINR(i),P_PINS(C),P_SPINR(e)::S(H)
      • S(b);N_GUARD,N_SPINR(i),P_PINS(C),P_SPINR(e),S_CUTQ(j)::R1(D),XP(d)
      • S(b);N_SPINR(i),P_PINS(C),P_SPINR(e),S_CUTB(g)::S(H)
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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).