MESON Chess Problem Database

Problem Display
PID: 109377 (1nQR4/2b1p3/1Nr3r1/4p2N/B3k2K/4P2P/3PP2B/3n4 w - - 0 1)

Sim, Malcolm

Toronto Telegram, 1930

1nQR4/2b1p3/1Nr3r1/4p2N/B3k2K/4P2P/3PP2B/3n4

#2

11 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rc2
      • 2.Bxc2#
    • 1...Rxb6
      • 2.Bc2#
    • 1...Rce6
      • 2.Bc2#
    • 1...Rcf6
      • 2.Bc2#
    • 1...Rg3
      • 2.Sxg3#
    • 1...Rg4+
      • 2.Qxg4#
    • 1...Rd6
      • 2.Sg3#
      • 2.Qg4#
    • 1...Rge6
      • 2.Sg3#
    • 1...Rgf6
      • 2.Sg3#
    • 1...Rh6
      • 2.Qg4#
    • 1...Sc3
      • 2.Bc2#
    • 1...Sxe3
      • 2.d3#
  • Tries
    • 1.Bxc6+?
      • 1...Rxc6
        • 2.Sg3#
        • 2.Qg4#
      • 1...Sxc6!
  • Keys
    • 1.Qe6!
      • threat
        • 2.Rd4#
      • 1...Rg4+
        • 2.Qxg4#
      • 1...Rcxe6
        • 2.Bc2#
      • 1...Rgxe6
        • 2.Sg3#
      • 1...Bxb6
        • 2.Qxe5#
      • 1...Bxd8
        • 2.Qxe5#
      • 1...Sxe3
        • 2.d3#
      • 1...Rc4
        • 2.Qxg6#
      • 1...Rd6
        • 2.Qxe5#
      • 1...Bd6
        • 2.Qxg6#
      • 1...Sd7
        • 2.Bxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 7
  • Sets
    • R(d);N_GUARD::B(F),XR(d)
    • R(d);N_GUARD,XS(I)::B(F)
    • R(d);N_GUARD::B(F)
    • R(e);N_GUARD::S(H),XR(e)
    • R(e);CHECK,N_GUARD::QAR2(J),XR(e)
    • R(e);N_GUARD::S(H)
    • R(e);N_GUARD,P_PINS(H)::QAR2(J)
    • S(a);S_CUTR(d)::B(F)
    • S(a);SBLOCK,XP(D)::P(A)
  • Tries
    • Try
      • B(F);CHECK,XR(d)
      • Refutation
        • S(h);XB(F)
  • Actual
    • Q(J);P_PINP(c)
    • Threat
      • R1(K)
    • Vars
      • R(e);CHECK,N_GUARD::QAR2(J),XR(e)
      • R(d);N_GUARD,N_SPINP(c),XQ(J)::B(F)
      • R(e);N_GUARD,N_SPINP(c),XQ(J)::S(H)
      • B(f);N_GUARD,XS(I)::QAR1(J),XP(c)
      • B(f);N_GUARD,XR(K)::QAR1(J),XP(c)
      • S(a);SBLOCK,XP(D)::P(A)
      • R(d);N_GUARD::QAB(J),XR(e)
      • R(d);S_CUTB(f)::QAR1(J),XP(c)
      • B(f);S_CUTR(d)::QAB(J),XR(e)
      • S(h);N_GUARD::B(F),XR(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).