MESON Chess Problem Database

Problem Display
PID: 174203 (b2R3Q/1B4B1/2n1p1p1/3n2pN/4k1Pp/4P2K/4R3/4N3 w - - 0 1)

Buchner, Richard

Arbeiter Schachzeitung, 1928

b2R3Q/1B4B1/2n1p1p1/3n2pN/4k1Pp/4P2K/4R3/4N3

#2

10 + 8

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sc3
      • 2.Rd4#
    • 1...Sxe3
      • 2.Rd4#
    • 1...Sdb4
      • 2.Rd4#
    • 1...Sf4+
      • 2.exf4#
    • 1...Sb6
      • 2.Rd4#
    • 1...Sc7
      • 2.Rd4#
    • 1...Sde7
      • 2.Rd4#
    • 1...Sd4
      • 2.exd4#
    • 1...Se5
      • 2.Sf6#
    • 1...gxh5
      • 2.Qh7#
  • Tries
    • 1.Sf6+?
      • 1...Ke5
        • 2.Sd3#
        • 2.Sf3#
      • 1...Sxf6!
    • 1.Qf8?
      • threat
        • 2.Qf3#
      • 1...Sf4+
        • 2.exf4#
      • 1...Sd4
        • 2.exd4#
      • 1...Se5
        • 2.Sf6#
      • 1...Sf6!
  • Keys
    • 1.Qe8!
      • threat
        • 2.Qxg6#
      • 1...Sf4+
        • 2.exf4#
      • 1...gxh5
        • 2.Qg6#
      • 1...Sf6
        • 2.Qxe6#
      • 1...Sde7
        • 2.Rd4#
      • 1...Sd4
        • 2.exd4#
      • 1...Se5
        • 2.Sf6#
      • 1...Sce7
        • 2.Qa4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • S(c);OGATE,P_SPINS(e)::R1(I)
    • S(c);OGATE,P_SPINS(c),XP(C)::R1(I)
    • S(c);CHECK,OGATE,P_SPINS(e)::R(B)+P(C),XS(c)
    • S(e);OGATE,P_SPINS(c)::R(B)+P(C),XS(e)
    • S(e);P_SPINS(c),SBLOCK::S(F)
    • P(g);OGATEB,XS(F)::QAB(J)
  • Tries
    • Try
      • S(F);CHECK
      • Refutation
        • S(c);P_SPINS(e),XS(F)
    • Try
      • Q(J);
      • Threat
        • QAB1(J)
      • Vars
        • S(c);CHECK,OGATE,P_SPINS(e)::R(B)+P(C),XS(c)
        • S(e);OGATE,P_SPINS(c)::R(B)+P(C),XS(e)
        • S(e);P_SPINS(c),SBLOCK::S(F)
      • Refutation
        • S(c);P_SPINS(e)
  • Actual
    • Q(J);P_PINP(f)
    • Threat
      • QAB(J),XP(g)
    • Vars
      • S(c);CHECK,OGATE,P_SPINS(e)::R(B)+P(C),XS(c)
      • P(g);XS(F)::QAB(J)
      • S(c);P_SPINS(e)::QAR2(J),XP(f)
      • S(c);N_SPINP(f),OGATE,P_SPINS(e)::R1(I)
      • S(e);OGATE,P_SPINS(c)::R(B)+P(C),XS(e)
      • S(e);N_SPINP(f),P_SPINS(c),SBLOCK::S(F)
      • S(e);N_SPINP(f),OGATE,P_SPINS(c)::QAR(J)
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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).