MESON Chess Problem Database

Problem Display
PID: 228920 (bb2kN2/p2p1NK1/3p4/5p2/3P3B/3Q4/1Prp4/8 w - - 0 1)

de Rooij, C

Schackvarlden, 1926

bb2kN2/p2p1NK1/3p4/5p2/3P3B/3Q4/1Prp4/8

#2

7 + 9

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rc6
      • 2.Qe2#
      • 2.Qe3#
    • 1...Rc7
      • 2.Sxd6#
  • Tries
    • 1.Qxf5?
      • threat
        • 2.Qxd7#
      • 1...Rc7
        • 2.Sxd6#
      • 1...Bc6!
  • Keys
    • 1.Qb5!
      • threat
        • 2.Qxd7#
      • 1...Rc6
        • 2.Qe2#
      • 1...Rc7
        • 2.Sxd6#
      • 1...Bc6
        • 2.Qxb8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(a);S_CUTB(h)::S(E),XP(d)
  • Tries
    • Try
      • Q(B);XP(c)
      • Threat
        • QAB1(B),XP(f)
      • Vars
        • R(a);S_CUTB(h)::S(E),XP(d)
      • Refutation
        • B(g);
  • Actual
    • Q(B);P_PINP(f)
    • Threat
      • QAB1(B),XP(f)
    • Vars
      • R(a);N_SPINP(f),S_CUTB(g)::QAR(B)
      • R(a);S_CUTB(h)::S(E),XP(d)
      • B(g);N_SPINP(f),S_CUTR(a)::QAR(B),XB(h)
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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).