MESON Chess Problem Database

Problem Display
PID: 190273 (Bb1r4/4p2q/b3R3/3p1Q2/1PpkN3/4p3/1P6/1KN5 w - - 0 1)

Groeneveld, Cornelis

Suomen Shakki, 1983

Bb1r4/4p2q/b3R3/3p1Q2/1PpkN3/4p3/1P6/1KN5

#2

8 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rd6
      • 2.Qe5#
    • 1...Rc8
      • 2.Qxd5#
    • 1...Re8
      • 2.Qxd5#
    • 1...Rf8
      • 2.Qxd5#
    • 1...Rg8
      • 2.Qxd5#
    • 1...Rh8
      • 2.Qxd5#
    • 1...Be5
      • 2.Qxe5#
    • 1...Bd6
      • 2.Qxd5#
    • 1...Ba7
      • 2.Qe5#
    • 1...e2
      • 2.Qf2#
    • 1...dxe4
      • 2.Rxe4#
      • 2.Qc5#
  • Tries
    • 1.Qf6+?
      • 1...Be5
        • 2.Qxe5#
      • 1...exf6!
  • Keys
    • 1.Sd6!
      • threat
        • 2.Se2#
      • 1...Qxf5+
        • 2.Sxf5#
      • 1...Qh2
        • 2.Qxd5#
      • 1...Qh1
        • 2.Qe5#
      • 1...Qh5
        • 2.Qf4#
      • 1...e2
        • 2.Sxe2#
      • 1...c3
        • 2.Sb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 9
  • Sets
    • R(i);S_CUTB(h)::QAB1(F)
    • R(i);N_GUARD::QAR1(F),XP(d)
    • B(h);N_GUARD::QAB1(F),XB(h)
    • B(h);S_CUTR(i)::QAR1(F),XP(d)
    • B(h);N_GUARD::QAB1(F)
    • P(a);OGATEB::QAB(F)
  • Tries
    • Try
      • Q(F);CHECK,P_SPINS(E)
      • Vars
        • B(h);N_GUARD,P_SPINB(h)::QAB1(F),XB(h)
      • Refutation
        • P(f);XQ(F)
  • Actual
    • S(E);P_SPINQ(F)
    • Threat
      • S(B)
    • Vars
      • Q(g);CHECK,XQ(F)::S(E),XQ(g)
      • Q(g);N_PINQ(F)::QAR1(F),XP(d)
      • Q(g);N_PINQ(F),P_PINS(B)::QAB1(F)
      • Q(g);N_PINQ(F)::QAR2(F)
      • P(a);::S(B),XP(a)
      • P(b);N_GUARD::S(B)
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).