MESON Chess Problem Database

Problem Display
PID: 10690 (3K1QBB/2NP1N2/1p6/1P1R2P1/2k5/1b1pP2n/n7/6b1 w - - 0 1)

Touw Hian Bwee

3rd Prize, Europe Echecs, 1967

3K1QBB/2NP1N2/1p6/1P1R2P1/2k5/1b1pP2n/n7/6b1

#2

11 + 7

5862 An ABC of Chess Problems 1970
3772 FIDE Album (1965-1967) 1976
6352 A Collection of Chess Problems by Touw Hian Bwee 2008

SOLUTION

  • SOUND
  • Sets
    • 1...Sc3
      • 2.Se5#
      • 2.Rd4#
    • 1...Sb4
      • 2.Sd6#
  • Tries
    • 1.Rf5?
      • threat
        • 2.Sh6#
      • 1...Sxg5
        • 2.Sxg5#
      • 1...Sc3
        • 2.Se5#
      • 1...Sb4
        • 2.Sd6#
      • 1...Sf4
        • 2.Rxf4#
      • 1...d2!
    • 1.Qb4+?
      • 1...Sxb4
        • 2.Sd6#
      • 1...Kxb4!
  • Keys
    • 1.Sh6!
      • threat
        • 2.Rf5#
      • 1...Sxg5
        • 2.Rxg5#
      • 1...Sc3
        • 2.Rd4#
      • 1...Sb4
        • 2.Rc5#
      • 1...Sf4
        • 2.Qxf4#
      • 1...d2
        • 2.Rxd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(b);SBLOCK::S(G)
  • Tries
    • Try
      • R(C);
      • Threat
        • B(J)+S(G)
      • Vars
        • S(e);XP(D)::B(J)+S(G),XS(e)
        • S(b);SBLOCK::B(J)+S(G),DCHECK
        • S(e);N_GUARD::R(C),XS(e)
      • Refutation
        • P(d);
    • Try
      • Q(I);CHECK
      • Vars
        • S(b);SBLOCK,XQ(I)::S(G)
      • Refutation
        • K(f);P-FLIGHT,XQ(I)
  • Actual
    • S(G);
    • Threat
      • B(J)+R(C)
    • Vars
      • S(e);OGATE,XP(D)::B(J)+R(C),XS(e)
      • S(b);SBLOCK::B(J)+R(C),DCHECK
      • S(e);N_GUARD::QAR(I),XS(e)
      • P(d);OGATE::B(J)+R(C),XP(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).