MESON Chess Problem Database

Problem Display
PID: 22215 (1Nr5/r7/4p2Q/2n1kp2/pB2P3/2PR1P2/8/1K1N2b1 w - - 0 1)

Schmidt, Leif Carl

Skakbladet, 1975

1Nr5/r7/4p2Q/2n1kp2/pB2P3/2PR1P2/8/1K1N2b1

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rc6
      • 2.Sxc6#
    • 1...Rd8
      • 2.Sc6#
    • 1...Re8
      • 2.Sc6#
    • 1...Rf8
      • 2.Sc6#
    • 1...Rg8
      • 2.Sc6#
    • 1...Rh8
      • 2.Sc6#
    • 1...Sb3
      • 2.Bd6#
    • 1...Sxe4
      • 2.f4#
    • 1...Sa6
      • 2.Bd6#
    • 1...Sb7
      • 2.Sd7#
    • 1...Sd7
      • 2.Bd6#
    • 1...fxe4
      • 2.Qg5#
    • 1...f4
      • 2.Qg5#
  • Tries
    • 1.Sd7+?
      • 1...Sxd7
        • 2.Bd6#
      • 1...Rxd7!
  • Keys
    • 1.Sb2!
      • threat
        • 2.Sc4#
      • 1...Sxd3
        • 2.Sxd3#
      • 1...Sxe4
        • 2.f4#
      • 1...fxe4
        • 2.Qg5#
      • 1...Sb3
        • 2.Bd6#
      • 1...Sa6
        • 2.Bd6#
      • 1...Sb7
        • 2.Sd7#
      • 1...Sd7
        • 2.Bd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 7
  • Sets
    • R(h);N_GUARD::S(I),XR(h)
    • R(h);N_GUARD::S(I)
    • S(c);OGATE::B(F)
    • S(c);SBLOCK,XP(G)::P(E)
    • S(c);N_GUARD,S_CUTR(g)::S(I)
    • P(e);OGATEB,XP(G)::QAR2(H)
    • P(e);OGATEB::QAR2(H)
  • Tries
    • Try
      • S(I);CHECK
      • Vars
        • S(c);OGATE,XS(I)::B(F)
      • Refutation
        • R(g);XS(I)
  • Actual
    • S(B);
    • Threat
      • S(B)
    • Vars
      • S(c);XR(D)::S(B),XS(c)
      • S(c);SBLOCK,XP(G)::P(E)
      • P(e);OGATEB,XP(G)::QAR2(H)
      • S(c);OGATE::B(F)
      • S(c);N_GUARD,S_CUTR(g)::S(I)
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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).