MESON Chess Problem Database

Problem Display
PID: 142880 (8/3Nr1n1/3PP1Rp/nQ1P1kqP/2p4R/2K1B1pP/2P3N1/1B6 w - - 0 1)

Fontaine, Leon

diagrammes, 1973

8/3Nr1n1/3PP1Rp/nQ1P1kqP/2p4R/2K1B1pP/2P3N1/1B6

#2

14 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe3+
      • 2.Sxe3#
    • 1...Qf4
      • 2.Rxf4#
    • 1...Qf6+
      • 2.Rxf6#
    • 1...Qxh5
      • 2.Rf6#
    • 1...Rxe6
      • 2.dxe6#
    • 1...Sb3
      • 2.cxb3#
    • 1...Sc6
      • 2.dxc6#
    • 1...Sxe6
      • 2.dxe6#
  • Keys
    • 1.Kd4!
      • threat
        • 2.c3#
      • 1...Qxe3+
        • 2.Sxe3#
      • 1...Qf4+
        • 2.Rxf4#
      • 1...Qxh4+
        • 2.Sxh4#
      • 1...Qf6+
        • 2.Rxf6#
      • 1...Qg4+
        • 2.hxg4#
      • 1...Sb3+
        • 2.cxb3#
      • 1...Sc6+
        • 2.dxc6#
      • 1...Sxe6+
        • 2.dxe6#
      • 1...Rxe6
        • 2.dxe6#
      • 1...c3
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • Q(e);CHECK,XB(E)::S(C),XQ(e)
    • Q(e);N_GUARD::R1(G),XQ(e)
    • Q(e);CHECK,N_GUARD::R1(M),XQ(e)
    • Q(e);N_GUARD,XP(J)::R1(M)
    • R(g);OGATE,XP(L)::QAR(H)+P(I),XR(g)
    • S(c);OGATE::B(A)+P(B),XS(c)
    • S(c);OGATE::QAR(H)+P(I),XS(c)
    • S(h);OGATE,XP(L)::QAR(H)+P(I),XS(h)
  • Actual
    • K(D);S_FLIGHT
    • Threat
      • B(A)+P(B)
    • Vars
      • Q(e);CHECK,XB(E)::S(C),XQ(e)
      • Q(e);CHECK,N_GUARD::R1(G),XQ(e)
      • Q(e);CHECK,XR(G)::S(C),XQ(e)
      • Q(e);CHECK,N_GUARD::R1(M),XQ(e)
      • Q(e);CHECK,OGATE::P(F),XQ(e)
      • S(c);CHECK,OGATE::B(A)+P(B),XS(c)
      • S(c);CHECK,OGATE::QAR(H)+P(I),XS(c)
      • S(h);CHECK,OGATE,XP(L)::QAR(H)+P(I),XS(h)
      • R(g);OGATE,XP(L)::QAR(H)+P(I),XR(g)
      • P(b);OGATE::QAB(H)
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).