MESON Chess Problem Database

Problem Display
PID: 103817 (3r1r2/8/3NPNp1/1p1Pk1p1/1B6/pK4P1/2P2Q1n/8 w - - 0 1)

van Eelde, Antonie Clarus Johannes

Checkmate, 1904

3r1r2/8/3NPNp1/1p1Pk1p1/1B6/pK4P1/2P2Q1n/8

#2

9 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd6
      • 2.Bc3#
    • 1...Rf7
      • 2.Sxf7#
    • 1...Re8
      • 2.Sf7#
    • 1...Rg8
      • 2.Sf7#
    • 1...Rh8
      • 2.Sf7#
    • 1...g4
      • 2.Qf4#
  • Tries
    • 1.Bc5?
      • threat
        • 2.Qd4#
      • 1...Rxd6
        • 2.Bd4#
      • 1...Sf3!
    • 1.Qe1+?
      • 1...Kd4
        • 2.Sxb5#
        • 2.Qc3#
        • 2.Qe4#
      • 1...Kxf6!
    • 1.Qe2+?
      • 1...Kd4
        • 2.Sxb5#
        • 2.Qe4#
        • 2.c3#
      • 1...Kxf6!
    • 1.Qf5+?
      • 1...Kd4
        • 2.Qe4#
      • 1...gxf5!
  • Keys
    • 1.c4!
      • 1...bxc4+
        • 2.Sxc4#
      • 1...Rxd6
        • 2.Bc3#
      • 1...Rxf6
        • 2.Qe3#
      • 1...Sf3
        • 2.Sg4#
      • 1...Rd7
        • 2.Sxd7#
      • 1...Ra8
        • 2.Sd7#
      • 1...Rb8
        • 2.Sd7#
      • 1...Rc8
        • 2.Sd7#
      • 1...Rde8
        • 2.Sd7#
      • 1...Rf7
        • 2.Sxf7#
      • 1...Rfe8
        • 2.Sf7#
      • 1...Rg8
        • 2.Sf7#
      • 1...Rh8
        • 2.Sf7#
      • 1...Sf1
        • 2.Sg4#
      • 1...Sg4
        • 2.Sxg4#
      • 1...a2
        • 2.Qb2#
      • 1...g4
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 0
  • Sets
    • R(g);SBLOCK,XS(G)::B(E)
    • R(h);N_GUARD::S(G),XR(h)
    • R(h);N_GUARD::S(G)
    • P(e);N_GUARD::QAB1(B)
  • Tries
    • Try
      • B(E);
      • Threat
        • QAB1(B)
      • Vars
        • R(g);SBLOCK,XS(G)::B(E)
      • Refutation
        • S(a);
    • Try
      • Q(B);CHECK
      • Refutation
        • K(d);S_FLIGHT,XS(I)
    • Try
      • Q(B);CHECK
      • Refutation
        • K(d);S_FLIGHT,XS(I)
    • Try
      • Q(B);CHECK
      • Vars
        • K(d);S_FLIGHT::QAR1(B)
      • Refutation
        • P(f);XQ(B)
  • Actual
    • P(A);
    • Vars
      • P(c);CHECK,XP(A)::S(G),XP(c)
      • R(g);SBLOCK,XS(G)::B(E)
      • R(h);SBLOCK,XS(I)::QAR2(B)
      • S(a);N_GUARD::S(I)
      • R(g);N_GUARD::S(I),XR(g)
      • R(g);N_GUARD::S(I)
      • R(h);N_GUARD::S(G),XR(h)
      • R(h);N_GUARD::S(G)
      • S(a);N_GUARD::S(I),XS(a)
      • P(b);N_GUARD::QAB(B)
      • P(e);N_GUARD::QAB1(B)
HTML5 logo

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).