MESON Chess Problem Database

Problem Display
PID: 261946 (2b1r1q1/1p6/1B6/RQ2np2/3Nkpp1/3r1RP1/1n2pp1P/5BbK w - - 0 1)

Groeneveld, Cornelis

1st Prize, Problemnoter, 1965

2b1r1q1/1p6/1B6/RQ2np2/3Nkpp1/3r1RP1/1n2pp1P/5BbK

#2

9 + 14

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qd5
      • 2.Qxd5#
    • 1...Qh7
      • 2.Qd5#
    • 1...Qg5
      • 2.Qd5#
    • 1...Qg6
      • 2.Qd5#
    • 1...Qg7
      • 2.Qd5#
    • 1...Qf8
      • 2.Qd5#
    • 1...Qh8
      • 2.Qd5#
    • 1...Rd1
      • 2.Qxe2#
    • 1...Re3
      • 2.Rxf4#
    • 1...Rxd4
      • 2.Qxe2#
    • 1...Re6
      • 2.Qd5#
    • 1...Rd8
      • 2.Qxe5#
    • 1...Rf8
      • 2.Qxe5#
    • 1...Be6
      • 2.Qxe5#
    • 1...Sd7
      • 2.Qxf5#
    • 1...Sf7
      • 2.Qd5#
  • Keys
    • 1.Se6!
      • threat
        • 2.Rxf4#
      • 1...Kxf3
        • 2.Bg2#
      • 1...Rxf3
        • 2.Qd5#
      • 1...Sxf3
        • 2.Qxf5#
      • 1...fxg3
        • 2.Rf4#
      • 1...gxf3
        • 2.Qxe5#
      • 1...Qg5
        • 2.Sxg5#
      • 1...Rd4
        • 2.Qxe2#
      • 1...Sg6
        • 2.Sg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 6
    • REMOVED MATES = 14
  • Sets
    • Q(n);N_GUARD::QAB1(H),XQ(n)
    • Q(n);N_GUARD,P_PINP(C)::QAB1(H)
    • Q(n);N_GUARD::QAB1(H)
    • R(e);OGATE::QAR2(H),XP(c)
    • R(e);SBLOCK::R1(D),XP(g)
    • R(e);OGATE,XS(F)::QAR2(H),XP(c)
    • R(m);S_CUTQ(n)::QAB1(H)
    • R(m);N_GUARD::QAR1(H),XS(i)
    • B(l);S_CUTR(m)::QAR1(H),XS(i)
    • S(i);OGATE::QAB1(H),XP(j)
    • S(i);S_CUTQ(n)::QAB1(H)
  • Actual
    • S(F);
    • Threat
      • R1(D),XP(g)
    • Vars
      • K(f);OGATEB,S_FLIGHT,XR(D)::B(A)
      • R(e);N_GUARD,SBLOCK,XR(D)::QAB1(H)
      • S(i);OGATE,SBLOCK,XR(D)::QAB1(H),XP(j)
      • P(g);XP(E)::R1(D)
      • P(h);SBLOCK,XR(D)::QAR1(H),XS(i)
      • Q(n);N_GUARD::S(F),XQ(n)
      • R(e);OGATE::QAR2(H),XP(c)
      • S(i);S_CUTQ(n)::S(F)
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).