MESON Chess Problem Database

Problem Display
PID: 263790 (5B2/5pnK/3Pk1NR/1Bpp4/4b3/2qN4/8/4QR2 w - - 0 1)

Hartong, Jan

Tijdschrift vd NSB, 1929

5B2/5pnK/3Pk1NR/1Bpp4/4b3/2qN4/8/4QR2

#2

9 + 7

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qa1
      • 2.Sxc5#
    • 1...Qxe1
      • 2.Sxc5#
    • 1...Qb2
      • 2.Sxc5#
    • 1...Qd2
      • 2.Sxc5#
    • 1...Qa5
      • 2.Sxc5#
    • 1...Qe5
      • 2.Sxc5#
    • 1...Qf6
      • 2.Sxc5#
    • 1...Qb3
      • 2.Sxc5#
    • 1...Sf5
      • 2.Sgf4#
    • 1...c4
      • 2.Sc5#
    • 1...d4
      • 2.Qxe4#
    • 1...f5
      • 2.Sge5#
  • Tries
    • 1.Qxe4+?
      • 1...Qe5
        • 2.Sxc5#
        • 2.Sgf4#
        • 2.Qxe5#
      • 1...dxe4!
  • Keys
    • 1.d7!
      • threat
        • 2.d8S#
      • 1...Sf5
        • 2.Sgf4#
      • 1...d4
        • 2.Qxe4#
      • 1...f5
        • 2.Sge5#
      • 1...Qa5
        • 2.Sxc5#
      • 1...Qf6
        • 2.Sxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 7
  • Sets
    • Q(a);N_GUARD::S(C),XP(c)
    • Q(a);N_GUARD,N_SPINB(b),XQ(A)::S(C),XP(c)
    • Q(a);N_GUARD,N_SPINB(b)::S(C),XP(c)
    • S(g);N_PINS(F),SBLOCK::R(G)+S(F),DCHECK
    • P(c);S_CUTQ(a)::S(C)
    • P(d);N_GUARD,S_CUTQ(a)::QAR2(A),XB(b)
    • P(f);N_PINS(F)::R(G)+S(F)
  • Tries
    • Try
      • Q(A);CHECK,N_SPINS(F),XB(b)
      • Refutation
        • P(d);XQ(A)
  • Actual
    • P(E);
    • Threat
      • P=S
    • Vars
      • S(g);N_PINS(F),SBLOCK::R(G)+S(F),DCHECK
      • P(d);N_GUARD,S_CUTQ(a)::QAR2(A),XB(b)
      • P(f);N_PINS(F)::R(G)+S(F)
      • Q(a);N_GUARD::S(C),XP(c)
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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).