MESON Chess Problem Database

Problem Display
PID: 287317 (4R3/8/1BpN1ppQ/prr2pn1/pbP1p3/R1n1k3/4N1P1/1B2K3 w - - 0 1)

Fontaine, Leon

Probleemblad, 1959

4R3/8/1BpN1ppQ/prr2pn1/pbP1p3/R1n1k3/4N1P1/1B2K3

#2

10 + 13

SOLUTION

  • SOUND
  • Tries
    • 1.Bxc5+?
      • 1...Bxc5
        • 2.Rxc3#
      • 1...Rxc5!
    • 1.Qxg5+?
      • 1...f4
        • 2.Rxe4#
        • 2.Qxf4#
      • 1...fxg5!
    • 1.Qh1?
      • threat
        • 2.Qg1#
      • 1...Sh3
        • 2.Qxh3#
      • 1...Sf3+!
    • 1.Qh2?
      • threat
        • 2.Qg1#
        • 2.Qf4#
      • 1...Sh3
        • 2.Qg3#
        • 2.Qxh3#
      • 1...Se6
        • 2.Qg1#
        • 2.Qg3#
        • 2.Qh3#
      • 1...f4
        • 2.Qg1#
        • 2.Qxf4#
      • 1...Sf3+!
    • 1.Qh3+?
      • 1...Sf3+
        • 2.Qxf3#
      • 1...Sxh3!
    • 1.Qh4?
      • threat
        • 2.Qf2#
        • 2.Qf4#
      • 1...Sh3
        • 2.Qg3#
        • 2.Qxh3#
      • 1...Se6
        • 2.Qf2#
        • 2.Qg3#
        • 2.Qh3#
      • 1...f4
        • 2.Qf2#
        • 2.Qxf4#
      • 1...Sf3+!
  • Keys
    • 1.Sxe4!
      • threat
        • 2.Sd2#
        • 2.Sf2#
        • 2.S4xc3#
        • 2.S4g3#
        • 2.Sxc5#
        • 2.Sxg5#
        • 2.Sd6#
        • 2.Sxf6#
      • 1...Rxb6
        • 2.Sxc5#
      • 1...Bxa3
        • 2.S4xc3#
      • 1...fxe4
        • 2.Rxe4#
      • 1...f4
        • 2.Sxg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(G);CHECK,XR(h)
      • Vars
        • B(d);XB(G)::R(E),XS(a)
      • Refutation
        • R(g);XB(G)
    • Try
      • Q(I);CHECK,XS(j)
      • Refutation
        • P(l);XQ(I)
    • Try
      • Q(I);
      • Threat
        • QAB(I)
      • Vars
        • S(j);N_GUARD::QAR(I),XS(j)
      • Refutation
        • S(j);CHECK
    • Try
      • Q(I);
      • Threat
        • DUALS(2)
      • Refutation
        • S(j);CHECK
    • Try
      • Q(I);CHECK
      • Vars
        • S(j);CHECK,N_GUARD::QAR1(I),XS(j)
      • Refutation
        • S(j);XQ(I)
    • Try
      • Q(I);
      • Threat
        • DUALS(2)
      • Refutation
        • S(j);CHECK
  • Actual
    • S(H);XP(e)
    • Threat
      • DUALS(8)
    • Vars
      • R(g);N_SPINR(h),XB(G)::R(J)+S(H),XR(h)
      • B(d);N_SPINS(a),P_SPINS(j),XR(E)::R(J)+S(H),XS(a)
      • P(i);OGATE,P_SPINP(i),XS(H)::R1(J),XP(i)
      • P(i);::R(J)+S(H),XS(j)
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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).