MESON Chess Problem Database

Problem Display
PID: 50995 (6bb/3R4/p2rQ2B/3N3p/2n1P2p/8/KnP1kP1N/5R2 w - - 0 1)

Wirtanen, Erkki Aukusti

The Spectator, 1957

6bb/3R4/p2rQ2B/3N3p/2n1P2p/8/KnP1kP1N/5R2

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rb6
      • 2.Sf4#
    • 1...Rc6
      • 2.Sf4#
    • 1...Rxe6
      • 2.Sf4#
    • 1...Bc3
      • 2.Sxc3#
    • 1...Sd2
      • 2.Sf4#
    • 1...Se5
      • 2.Sc3#
  • Keys
    • 1.Qh3!
      • threat
        • 2.Qf3#
      • 1...Rxh6
        • 2.Sf4#
      • 1...Se3
        • 2.Qxe3#
      • 1...Rf6
        • 2.Sc3#
      • 1...Sd2
        • 2.Qe3#
      • 1...Se5
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • R(g);::S(G)
    • R(g);XQ(H)::S(G)
    • B(i);N_GUARD::S(G),XB(i)
    • S(c);SBLOCK::S(G)
    • S(c);S_CUTB(i)::S(G)
  • Actual
    • Q(H);
    • Threat
      • QAB1(H)
    • Vars
      • R(g);XB(I)::S(G)
      • S(c);N_GUARD,P_PINS(G)::QAR1(H),XS(c)
      • R(g);S_CUTB(i)::S(G)
      • S(c);N_GUARD,P_PINS(G)::QAR1(H)
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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).