MESON Chess Problem Database

Problem Display
PID: 174139 (K4B2/3R1N2/2Pnkrp1/3R4/1P1pqp2/1N1p4/5Q2/8 w - - 0 1)

Buchner, Richard

Hamburger Echo, 1927

K4B2/3R1N2/2Pnkrp1/3R4/1P1pqp2/1N1p4/5Q2/8

#2

9 + 8

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qh1
      • 2.Re5#
    • 1...Qg2
      • 2.Re5#
    • 1...Qf3
      • 2.Re5#
    • 1...Qf5
      • 2.R5xd6#
    • 1...Qe5
      • 2.Rxe5#
    • 1...Rf5
      • 2.R5xd6#
    • 1...Rxf7
      • 2.R7xd6#
    • 1...Sc4
      • 2.Sc5#
      • 2.Sg5#
      • 2.Sd8#
    • 1...Sb5
      • 2.Sc5#
      • 2.Sg5#
      • 2.Sd8#
    • 1...Sf5
      • 2.Sc5#
      • 2.Sg5#
      • 2.Sd8#
    • 1...Sb7
      • 2.Sg5#
    • 1...Sxf7
      • 2.Sc5#
    • 1...Sc8
      • 2.Sc5#
      • 2.Sg5#
      • 2.Sd8#
    • 1...Se8
      • 2.Sc5#
      • 2.Sg5#
      • 2.Sd8#
  • Keys
    • 1.Qa2!
      • threat
        • 2.Sc5#
      • 1...Kxd5
        • 2.Sa5#
      • 1...Qxd5
        • 2.Sxd4#
      • 1...Rxf7
        • 2.R7xd6#
      • 1...Qe5
        • 2.Rxe5#
      • 1...Rf5
        • 2.R5xd6#
      • 1...Sb7
        • 2.Sg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • Q(c);N_GUARD::R1(D)
    • Q(c);SBLOCK::R1(D),XS(e)
    • Q(c);N_GUARD::R1(D),XQ(c)
    • R(g);SBLOCK::R1(D),XS(e)
    • R(g);SBLOCK,XS(G)::R1(F),XS(e)
    • S(e);::S(G)
    • S(e);XS(G)::S(B)
  • Actual
    • Q(A);
    • Threat
      • S(B)
    • Vars
      • K(f);P_SPINS(e),S_FLIGHT,XR(D)::QAB(A)+S(B)
      • Q(c);N_GUARD,P_PINP(E),XR(D)::S(B),XP(b)
      • R(g);SBLOCK,XS(G)::R1(F),XS(e)
      • Q(c);N_GUARD::R1(D),XQ(c)
      • R(g);SBLOCK::R1(D),XS(e)
      • S(e);::S(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).