MESON Chess Problem Database

Problem Display
PID: 147863 (3N4/8/Qp1r4/PPPP3R/1RKp1k2/2pPpPpP/3r2P1/2B3N1 w - - 0 1)

le Grand, Piet

4th HM., Scacchi e Scienze Applicate, 2008

3N4/8/Qp1r4/PPPP3R/1RKp1k2/2pPpPpP/3r2P1/2B3N1

#2

15 + 8

102 Probleemblad 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Rd1
      • 2.Se2#
    • 1...Re2
      • 2.Sxe2#
    • 1...Rxd3
      • 2.Se2#
    • 1...Rxd5
      • 2.Se6#
    • 1...Re6
      • 2.Sxe6#
    • 1...Rd7
      • 2.Se6#
    • 1...bxa5
      • 2.Qxd6#
    • 1...bxc5
      • 2.Qxd6#
  • Tries
    • 1.Qc8?
      • threat
        • 2.Rf5#
        • 2.Qg4#
        • 2.Qf5#
      • 1...Rxd5
        • 2.Se6#
        • 2.Qg4#
      • 1...Re6
        • 2.Sxe6#
      • 1...Rf6
        • 2.Qg4#
      • 1...Rg6
        • 2.Rf5#
        • 2.Qf5#
      • 1...Rd7
        • 2.Se6#
      • 1...e2!
  • Keys
    • 1.Kxd4!
      • threat
        • 2.Kxc3#
      • 1...Rxd3+
        • 2.Kxd3#
      • 1...Rxd5+
        • 2.Kxd5#
      • 1...bxc5+
        • 2.Kxc5#
      • 1...bxa5
        • 2.Qxd6#
      • 1...Rb2
        • 2.Bxe3#
      • 1...Rc2
        • 2.Bxe3#
      • 1...Re6
        • 2.Sxe6#
      • 1...c2
        • 2.Kc3#
      • 1...e2
        • 2.Sxe2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • R(a);N_GUARD,P_SPINP(c)::S(B)
    • R(a);N_GUARD,P_SPINP(c)::S(B),XR(a)
    • R(a);N_GUARD,P_SPINP(c),XP(D)::S(B)
    • R(h);N_GUARD,XP(L)::S(O)
    • R(h);N_GUARD::S(O),XR(h)
    • R(h);N_GUARD::S(O)
    • P(g);OGATE,XP(I)::QAB(N),XR(h)
    • P(g);OGATE,XP(K)::QAB(N),XR(h)
  • Tries
    • Try
      • Q(N);
      • Threat
        • DUALS(3)
      • Vars
        • R(h);N_GUARD::S(O),XR(h)
        • R(h);::QAR1(N)
        • R(h);N_GUARD::S(O)
      • Refutation
        • P(c);P_SPINR(a)
  • Actual
    • K(H);P-FLIGHT,P_SPINP(D),XP(e)
    • Threat
      • R(G)+K(H),XP(b)
    • Vars
      • R(a);CHECK,P_PINP(L),P_SPINP(c),XP(D)::R(G)+K(H),XR(a)
      • R(h);CHECK,XP(L)::R(G)+K(H),XR(h)
      • P(g);CHECK,XP(K)::R(G)+K(H),XP(g)
      • P(g);OGATE,XP(I)::QAB(N),XR(h)
      • R(a);N_PINP(D),OGATE,P_PINP(L),P_SPINP(c)::B(A),XP(c)
      • R(h);N_GUARD::S(O),XR(h)
      • P(b);::R(G)+K(H)
      • P(c);P_SPINR(a)::S(B),XP(c)
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).