MESON Chess Problem Database

Problem Display
PID: 103103 (1B4b1/1B1P1r2/2P5/R5pr/2NpkN2/3p1p2/K2Pp2b/4Q3 w - - 0 1)

Brummelman, Derk Hendrikus (AKA Bruma, DH)

El Ajedrez Espanol, 1957

1B4b1/1B1P1r2/2P5/R5pr/2NpkN2/3p1p2/K2Pp2b/4Q3

#2

10 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf4
      • 2.Re5#
    • 1...Bxf4
      • 2.c7#
    • 1...f2
      • 2.Qh1#
    • 1...gxf4
      • 2.Sd6#
  • Tries
    • 1.Qxe2+?
      • 1...dxe2
        • 2.d3#
      • 1...fxe2!
  • Keys
    • 1.Qb1!
      • threat
        • 2.Qxd3#
      • 1...Rxf4
        • 2.Re5#
      • 1...Bxf4
        • 2.c7#
      • 1...gxf4
        • 2.Sd6#
      • 1...e1S
        • 2.Qxe1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • R(i);P_PINS(D),SBLOCK,XS(E)::R1(F)
    • B(b);SBLOCK,XS(E)::B(H)+P(G)
    • P(d);OGATEB::QAB(A)
    • P(g);SBLOCK,XS(E)::S(D)
  • Tries
    • Try
      • Q(A);CHECK,XP(a)
      • Vars
        • P(c);OGATE,XQ(A)::P(C)
      • Refutation
        • P(d);XQ(A)
  • Actual
    • Q(A);N_PINP(a),P_PINP(c)
    • Threat
      • QAB1(A),XP(c)
    • Vars
      • R(i);P_PINS(D),SBLOCK,XS(E)::R1(F)
      • B(b);SBLOCK,XS(E)::B(H)+P(G)
      • P(g);SBLOCK,XS(E)::S(D)
      • P(a);OGATEB::QAR(A),XS(a)
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).