MESON Chess Problem Database

Problem Display
PID: 124397 (b3Bb2/8/n6r/R2Nn3/2k4p/P1p4r/P6p/2NQ3K w - - 0 1)

Sim, Malcolm

Toronto Telegram, 1948

b3Bb2/8/n6r/R2Nn3/2k4p/P1p4r/P6p/2NQ3K

#2

8 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd5+
      • 2.Qxd5#
    • 1...Bc5
      • 2.Bb5#
    • 1...Sf3
      • 2.Se3#
      • 2.Qd3#
    • 1...Sg4
      • 2.Qxg4#
    • 1...Sc6
      • 2.Sb6#
    • 1...Sd7
      • 2.Qg4#
    • 1...Sf7
      • 2.Qg4#
    • 1...Sc5
      • 2.Bb5#
  • Tries
    • 1.Qe2+?
      • 1...Kd4
        • 2.Sb3#
      • 1...Sd3
        • 2.Qe4#
      • 1...Rd3!
  • Keys
    • 1.Se2!
      • threat
        • 2.Qd4#
      • 1...Bxd5+
        • 2.Qxd5#
      • 1...Rd3
        • 2.Qb3#
      • 1...Bc5
        • 2.Bb5#
      • 1...Sd3
        • 2.Qb3#
      • 1...Sf3
        • 2.Se3#
      • 1...Sc6
        • 2.Sb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • B(i);CHECK,OGATE,XS(G)::QAB1(B),XB(i)
    • B(j);SBLOCK::B(H)
    • S(f);N_GUARD::QAR(B),XS(f)
    • S(f);N_PINS(G)::S(G)
    • S(f);N_GUARD::QAR(B)
    • S(g);SBLOCK::B(H)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • K(d);P-FLIGHT::S(A)
        • S(f);P_SPINS(f)::QAR2(B)
      • Refutation
        • R(c);P_SPINR(c)
  • Actual
    • S(A);
    • Threat
      • QAR1(B)
    • Vars
      • B(i);CHECK,OGATE,XS(G)::QAB1(B),XB(i)
      • R(c);SBLOCK::QAB1(B)
      • B(j);SBLOCK::B(H)
      • S(f);SBLOCK::QAB1(B)
      • S(f);N_PINS(G)::S(G)
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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).