MESON Chess Problem Database

Problem Display
PID: 58582 (6K1/p2N4/8/1p1R3Q/1Pk1p3/Pp2P3/Nb2Rnb1/2n5 w - - 0 1)

de Smet, O

Het Belgisch Schaakbord (L'Echiquier Belge), 1954

6K1/p2N4/8/1p1R3Q/1Pk1p3/Pp2P3/Nb2Rnb1/2n5

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Bxa3
      • 2.Rd4#
    • 1...Bd4
      • 2.Rxd4#
    • 1...a5
      • 2.Sb6#
    • 1...a6
      • 2.Sb6#
  • Tries
    • 1.Rc2+?
      • 1...Bc3
        • 2.Rxc3#
        • 2.Rd4#
      • 1...bxc2!
    • 1.Rdd2?
      • threat
        • 2.Qf7#
        • 2.Qc5#
        • 2.Qd5#
      • 1...Sxa2
        • 2.Qc5#
      • 1...Bd4
        • 2.Rxd4#
        • 2.Qf7#
      • 1...Be5
        • 2.Sxe5#
        • 2.Qf7#
      • 1...Bh3
        • 2.Qc5#
        • 2.Qd5#
      • 1...Scd3
        • 2.Qf7#
      • 1...Sfd3
        • 2.Qf7#
      • 1...bxa2!
    • 1.Rd6?
      • threat
        • 2.Qf7#
        • 2.Qc5#
        • 2.Qd5#
      • 1...Sxa2
        • 2.Qc5#
      • 1...Bd4
        • 2.Rxd4#
      • 1...Be5
        • 2.Sxe5#
        • 2.Qf7#
      • 1...Bh3
        • 2.Qc5#
        • 2.Qd5#
      • 1...Scd3
        • 2.Qf7#
        • 2.Qd5#
      • 1...Sfd3
        • 2.Qf7#
        • 2.Qd5#
      • 1...bxa2!
  • Keys
    • 1.Rd3!
      • threat
        • 2.Qd5#
      • 1...Kxd3
        • 2.Qxb5#
      • 1...Scxd3
        • 2.Qf7#
      • 1...Sfxd3
        • 2.Qf7#
      • 1...exd3
        • 2.Qc5#
      • 1...Bd4
        • 2.Rxd4#
      • 1...Be5
        • 2.Sxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 3
  • Sets
    • B(b);N_GUARD,XP(C)::R1(F)
    • B(b);N_GUARD::R1(F),XB(b)
    • P(i);N_GUARD::S(H)
  • Tries
    • Try
      • R(B);CHECK
      • Refutation
        • P(e);XR(B)
    • Try
      • R(F);
      • Threat
        • DUALS(3)
      • Vars
        • S(a);XS(A)::QAR1(G)
        • S(a);::QAB(G)
        • S(c);::QAB(G)
      • Refutation
        • P(e);XS(A)
    • Try
      • R(F);
      • Threat
        • DUALS(3)
      • Vars
        • S(a);XS(A)::QAR1(G)
        • B(b);N_GUARD::R1(F),XB(b)
      • Refutation
        • P(e);XS(A)
  • Actual
    • R(F);
    • Threat
      • QAB1(G)
    • Vars
      • K(f);S_FLIGHT,XR(F)::QAB(G),XP(h)
      • S(a);SBLOCK,XR(F)::QAB(G)
      • S(c);SBLOCK,XR(F)::QAB(G)
      • P(g);SBLOCK,XR(F)::QAR1(G)
      • B(b);N_GUARD::R1(F),XB(b)
      • B(b);N_GUARD::S(H),XB(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).