MESON Chess Problem Database

Problem Display
PID: 195921 (3RK3/1qp5/1P6/1Bp4Q/1p2kP2/1PPN4/3P4/5r2 w - - 0 1)

Jordan, Gijsbertus

Haagsche Post TT, 1917

3RK3/1qp5/1P6/1Bp4Q/1p2kP2/1PPN4/3P4/5r2

#2

10 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Qd5
      • 2.Qxd5#
    • 1...Qa6
      • 2.Bc6#
      • 2.Qd5#
    • 1...Qc6+
      • 2.Bxc6#
    • 1...Qc8
      • 2.Bc6#
      • 2.Qd5#
    • 1...Qxb6
      • 2.Qd5#
    • 1...Qa7
      • 2.Bc6#
      • 2.Qd5#
    • 1...Qb8
      • 2.Bc6#
      • 2.Qd5#
    • 1...Rf3
      • 2.Qg6#
      • 2.Qe5#
      • 2.Qh7#
    • 1...Rxf4
      • 2.Sxc5#
    • 1...c4
      • 2.Rd4#
  • Keys
    • 1.Bd7!
      • threat
        • 2.Bf5#
      • 1...Kxd3
        • 2.Bf5#
      • 1...Rxf4
        • 2.Sxc5#
      • 1...Qd5
        • 2.Qe2#
      • 1...Qc6
        • 2.Bxc6#
      • 1...Qc8
        • 2.Bc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • Q(e);N_GUARD::QAB1(G),XQ(e)
    • Q(e);CHECK,N_GUARD::B(F),XQ(e)
    • Q(e);N_GUARD,XP(H)::QAB1(G)
    • R(a);SBLOCK,XP(E)::S(D),XP(d)
    • P(d);N_GUARD::R1(I)
  • Actual
    • B(F);
    • Threat
      • B(F)
    • Vars
      • K(c);S_FLIGHT,XS(D)::R(I)+B(F),DCHECK
      • R(a);SBLOCK,XP(E)::S(D),XP(d)
      • Q(e);SBLOCK::QAR2(G)
      • Q(e);N_GUARD,P_PINB(F)::B(F),XQ(e)
      • Q(e);N_GUARD,P_PINR(I)::B(F)
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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).