MESON Chess Problem Database

Problem Display
PID: 18757 (5K2/2Rp3p/3p1p2/3kP3/n1r1N1B1/b2N2p1/3R4/1Q3rB1 w - - 0 1)

van Dijk, Nils Gustav Gerard

4th HM., Sachove umeni (Ceskoslovensky sach), 1958

5K2/2Rp3p/3p1p2/3kP3/n1r1N1B1/b2N2p1/3R4/1Q3rB1

#2

9 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rxb1
      • 2.Sxf6#
    • 1...Rfc1
      • 2.Sxf6#
    • 1...Rd1
      • 2.Sxf6#
    • 1...Re1
      • 2.Sxf6#
    • 1...Rd4
      • 2.Qb7#
    • 1...Rxe4
      • 2.Qb7#
    • 1...Bc5
      • 2.Qb7#
    • 1...dxe5+
      • 2.Sb4#
    • 1...fxe5+
      • 2.Sf4#
  • Tries
    • 1.Qa2?
      • threat
        • 2.Qxc4#
      • 1...dxe5+
        • 2.Sdc5#
      • 1...fxe5+
        • 2.Sdf2#
      • 1...Kxe4
        • 2.Qxc4#
      • 1...Rc1
        • 2.Sxf6#
      • 1...Sb2
        • 2.Sc3#
      • 1...Sc5
        • 2.Sc3#
      • 1...Sb6
        • 2.Sc3#
      • 1...Bc5!
  • Keys
    • 1.Qb3!
      • threat
        • 2.Qxc4#
      • 1...dxe5+
        • 2.Sdc5#
      • 1...fxe5+
        • 2.Sdf2#
      • 1...Kxe4
        • 2.Qxc4#
      • 1...Rc1
        • 2.Sxf6#
      • 1...Bc5
        • 2.Qb7#
      • 1...Sb2
        • 2.Sc3#
      • 1...Sc5
        • 2.Sc3#
      • 1...Sb6
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • R(a);N_GUARD,XQ(A)::S(E),XP(h)
    • R(a);N_GUARD::S(E),XP(h)
    • R(e);N_GUARD::QAB(A)
    • R(e);N_GUARD,SBLOCK,XS(E)::QAB(A)
    • B(b);S_CUTR(e)::QAB(A)
    • P(g);CHECK,SBLOCK,XP(G)::R(C)+S(D),DCHECK
    • P(h);CHECK,SBLOCK,XP(G)::R(C)+S(D),DCHECK
  • Tries
    • Try
      • Q(A);P_PINR(e)
      • Threat
        • QAB1(A),XR(e)
      • Vars
        • P(g);CHECK,SBLOCK,XP(G)::R(C)+S(D)
        • P(h);CHECK,SBLOCK,XP(G)::R(C)+S(D)
        • K(f);N_SPINR(e),S_FLIGHT,XS(E)::QAR2(A),XR(e)
        • R(a);N_GUARD::S(E),XP(h)
        • S(d);N_GUARD::S(E)
      • Refutation
        • B(b);
  • Actual
    • Q(A);P_PINR(e)
    • Threat
      • QAB1(A),XR(e)
    • Vars
      • P(g);CHECK,SBLOCK,XP(G)::R(C)+S(D)
      • P(h);CHECK,SBLOCK,XP(G)::R(C)+S(D)
      • K(f);N_SPINR(e),S_FLIGHT,XS(E)::QAR2(A),XR(e)
      • R(a);N_GUARD::S(E),XP(h)
      • B(b);::QAB(A)
      • S(d);N_GUARD::S(E)
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).