MESON Chess Problem Database

Problem Display
PID: 166682 (5K2/3NB2B/p1p1kN2/1n6/2pnp3/r2Q1P2/6p1/1b3qb1 w - - 0 1)

Groeneveld, Cornelis

Comm., BCPS-40 JT, 1958-1960

5K2/3NB2B/p1p1kN2/1n6/2pnp3/r2Q1P2/6p1/1b3qb1

#2

7 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Qd1
      • 2.Qxc4#
    • 1...Qe1
      • 2.Qxc4#
    • 1...Qf2
      • 2.Qxc4#
    • 1...Qxf3
      • 2.Qxc4#
    • 1...Ba2
      • 2.Qxe4#
    • 1...Sc2
      • 2.Qxe4#
    • 1...Se2
      • 2.Qxc4#
    • 1...Sf5
      • 2.Bg8#
    • 1...exf3
      • 2.Bg8#
    • 1...e3
      • 2.Bg8#
  • Keys
    • 1.f4!
      • threat
        • 2.Sc5#
      • 1...Qxf4
        • 2.Qxc4#
      • 1...Sc2
        • 2.Qxe4#
      • 1...Se2
        • 2.Qxc4#
      • 1...Sb3
        • 2.Qh3#
      • 1...Sf3
        • 2.f5#
      • 1...Sf5
        • 2.Bg8#
      • 1...c5
        • 2.Sxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 7
  • Sets
    • Q(b);N_GUARD::QAB(A),XP(f)
    • Q(b);N_GUARD,P_PINS(C),XP(B)::QAB(A),XP(f)
    • B(a);N_GUARD::QAR2(A),XP(h)
    • S(g);S_CUTB(a)::QAR2(A),XP(h)
    • S(g);S_CUTQ(b)::QAB(A),XP(f)
    • S(g);SBLOCK::B(F)
    • P(h);XP(B)::B(F)
    • P(h);::B(F)
  • Actual
    • P(B);
    • Threat
      • S(D)
    • Vars
      • Q(b);N_GUARD,P_PINS(C),XP(B)::QAB(A),XP(f)
      • S(g);S_CUTB(a)::QAR2(A),XP(h)
      • S(g);S_CUTQ(b)::QAB(A),XP(f)
      • S(g);N_GUARD,S_CUTR(e)::QAB(A)
      • S(g);N_GUARD,S_CUTQ(b)::P(B)
      • S(g);SBLOCK::B(F)
      • P(k);::S(D),XP(k)
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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).