MESON Chess Problem Database

Problem Display
PID: 214864 (Q3B3/2k1B2K/pr3N2/1p6/2n4b/3r4/8/8 w - - 0 1)

Takala, Aarne

Suomen Shakki, 1933

Q3B3/2k1B2K/pr3N2/1p6/2n4b/3r4/8/8

#2

5 + 7

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ra3
      • 2.Sd5#
    • 1...Rb3
      • 2.Sd5#
    • 1...Rc3
      • 2.Sd5#
    • 1...Re3
      • 2.Sd5#
    • 1...Rf3
      • 2.Sd5#
    • 1...Rg3
      • 2.Sd5#
    • 1...Rh3
      • 2.Sd5#
    • 1...Rd5
      • 2.Sxd5#
    • 1...Rb8
      • 2.Qc6#
    • 1...Sd6
      • 2.Bd8#
  • Keys
    • 1.Bd7!
      • threat
        • 2.Qc8#
      • 1...Rxd7
        • 2.Se8#
      • 1...Rxf6
        • 2.Qa7#
      • 1...Rc6
        • 2.Qa7#
      • 1...Rbd6
        • 2.Bd8#
        • 2.Qa7#
      • 1...Re6
        • 2.Qa7#
      • 1...Rb7
        • 2.Qd8#
      • 1...Rb8
        • 2.Qc6#
      • 1...Sd6
        • 2.Bd8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 8
  • Sets
    • R(a);N_GUARD::S(A)
    • R(a);N_GUARD::S(A),XR(a)
    • R(f);N_GUARD,SBLOCK::QAR1(D)
    • S(b);SBLOCK,S_CUTR(a)::B(B)
  • Actual
    • B(E);
    • Threat
      • QAR1(D)
    • Vars
      • R(a);P_PINB(B),SBLOCK,XB(E)::S(A)
      • R(f);N_GUARD,XS(A)::QAR2(D)
      • R(f);N_GUARD::QAR2(D)
      • R(f);SBLOCK::QAB1(D)
      • R(f);N_GUARD,SBLOCK::QAR1(D)
      • S(b);SBLOCK::B(B)
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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).