MESON Chess Problem Database

Problem Display
PID: 175732 (3n2Q1/4NR1p/Kbp1k3/p6b/2NRpp2/2n5/3q4/8 w - - 0 1)

Erlin, Konrad (AKA Erlinger, Konrad)

HM., Anstram, 1898

3n2Q1/4NR1p/Kbp1k3/p6b/2NRpp2/2n5/3q4/8

#2

6 + 11

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qc1
      • 2.Rd6#
    • 1...Qe1
      • 2.Rd6#
    • 1...Qe3
      • 2.Rd6#
    • 1...Qa2
      • 2.Rd6#
    • 1...Qb2
      • 2.Rd6#
    • 1...Qc2
      • 2.Rd6#
    • 1...Qe2
      • 2.Rd6#
    • 1...Qf2
      • 2.Rd6#
    • 1...Qg2
      • 2.Rd6#
    • 1...Qh2
      • 2.Rd6#
  • Tries
    • 1.Rf6+?
      • 1...Kxe7
        • 2.Qf8#
      • 1...Kxf6!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Qe8#
      • 1...Qxd4
        • 2.Sxf4#
      • 1...Bxf7
        • 2.Qg4#
      • 1...Bxd4
        • 2.Sc7#
      • 1...Sxd5
        • 2.Rxe4#
      • 1...Sxf7
        • 2.Qc8#
      • 1...Bc5
        • 2.Sc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 10
  • Sets
    • Q(a);N_GUARD::R1(B)
    • Q(a);N_GUARD,P_PINS(A)::R1(B)
  • Tries
    • Try
      • R(E);CHECK
      • Vars
        • K(i);P-FLIGHT,XS(D)::QAB1(F)
      • Refutation
        • K(i);P-FLIGHT,XR(E)
  • Actual
    • S(D);
    • Threat
      • QAR2(F)
    • Vars
      • Q(a);N_GUARD,XR(B)::S(D),XP(d)
      • B(f);N_GUARD,P_SPINB(f),SBLOCK,XR(E)::QAB(F)
      • B(g);N_GUARD,XR(B)::S(D)
      • S(b);N_GUARD,SBLOCK,XS(D)::R(B),XP(c)
      • S(k);OGATE,P_SPINS(k),SBLOCK,XR(E)::QAB(F)
      • B(g);N_GUARD::S(D)
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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).