MESON Chess Problem Database

Problem Display
PID: 139218 (8/3N1nN1/3pP1p1/bPpkB1p1/p5Q1/1r2P1K1/B4P2/8 w - - 0 1)

Ellerman, Arnoldo

El Ajedrez Americano, 1924

8/3N1nN1/3pP1p1/bPpkB1p1/p5Q1/1r2P1K1/B4P2/8

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Sxe5
      • 2.Sf6#
    • 1...c4
      • 2.Qf3#
      • 2.Qd4#
  • Tries
    • 1.Se8?
      • threat
        • 2.Sef6#
      • 1...dxe5
        • 2.Sdf6#
      • 1...Bd8!
    • 1.Bxb3+?
      • 1...c4
        • 2.Bxc4#
        • 2.Qf3#
        • 2.Qxc4#
        • 2.Qd4#
        • 2.e4#
      • 1...axb3!
  • Keys
    • 1.Qe2!
      • threat
        • 2.Qd3#
      • 1...Ke4
        • 2.Qc4#
      • 1...Sxe5
        • 2.Sf6#
      • 1...Bc3
        • 2.e4#
      • 1...c4
        • 2.Qf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(i);SBLOCK,XB(G)::S(I)
  • Tries
    • Try
      • S(J);
      • Threat
        • S(J)
      • Vars
        • P(g);SBLOCK,XB(G)::S(I)
      • Refutation
        • B(c);
    • Try
      • B(A);CHECK,N_SPINP(C),XR(a)
      • Refutation
        • P(b);XB(A)
  • Actual
    • Q(E);
    • Threat
      • QAR2(E)
    • Vars
      • K(e);N_SPINR(a),S_FLIGHT::QAR2(E)
      • S(i);SBLOCK,XB(G)::S(I)
      • B(c);N_PINP(C)::P(C)
      • P(d);N_SPINR(a),SBLOCK::QAB(E)
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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).