MESON Chess Problem Database

Problem Display
PID: 229220 (r7/8/2bBB3/3n4/2p3pp/6R1/k2nP1Q1/1RKN4 w - - 0 1)

Steiner, Mor

Ujsag, 1926

r7/8/2bBB3/3n4/2p3pp/6R1/k2nP1Q1/1RKN4

#2

8 + 8

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ra3
      • 2.Rxa3#
    • 1...Rb8
      • 2.Ra3#
    • 1...Rc8
      • 2.Ra3#
    • 1...Rd8
      • 2.Ra3#
    • 1...Re8
      • 2.Ra3#
    • 1...Rf8
      • 2.Ra3#
    • 1...Rg8
      • 2.Ra3#
    • 1...Rh8
      • 2.Ra3#
    • 1...Ba4
      • 2.Ra3#
    • 1...Sf3
      • 2.exf3#
    • 1...Sc3
      • 2.Sxc3#
    • 1...Se3
      • 2.Sc3#
    • 1...Sf4
      • 2.Sc3#
    • 1...Sb6
      • 2.Sc3#
    • 1...Sf6
      • 2.Sc3#
    • 1...Sc7
      • 2.Sc3#
    • 1...Se7
      • 2.Sc3#
    • 1...c3
      • 2.Sxc3#
  • Keys
    • 1.e4!
      • threat
        • 2.Qxd2#
      • 1...Rb8
        • 2.Ra3#
      • 1...Ba4
        • 2.Ra3#
      • 1...Se3
        • 2.Sc3#
      • 1...Sb4
        • 2.Bxc4#
      • 1...c3
        • 2.Sxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 14
  • Sets
    • R(h);N_GUARD::R1(F),XR(h)
    • R(h);N_GUARD::R1(F)
    • B(g);S_CUTR(h)::R1(F)
    • S(b);OGATE::QAR(E)+P(D),XS(b)
    • S(f);N_GUARD,P_SPINP(c)::S(C),XS(f)
    • S(f);N_GUARD,P_SPINP(c)::S(C)
    • P(c);P_SPINS(f)::S(C),XP(c)
  • Actual
    • P(D);P_PINS(b)
    • Threat
      • QAR(E),XS(b)
    • Vars
      • R(h);N_GUARD::R1(F)
      • B(g);S_CUTR(h)::R1(F)
      • S(f);N_GUARD,P_SPINP(c)::S(C)
      • S(f);OGATE,P_SPINP(c)::B(H),XP(c)
      • P(c);S_CUTS(f)::S(C),XP(c)
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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).