MESON Chess Problem Database

Problem Display
PID: 17586 (1B1b2b1/K1P1NPR1/1N2k1n1/P1P3P1/2R1B2n/1Q6/3rq3/3r4 w - - 0 1)

Fleck, Ferenc

2nd Place, Tijdschrift, 1947

1B1b2b1/K1P1NPR1/1N2k1n1/P1P3P1/2R1B2n/1Q6/3rq3/3r4

#2

13 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe7
      • 2.fxg8Q#
    • 1...Qxe4
      • 2.Rxe4#
    • 1...Se5
      • 2.f8S#
  • Tries
    • 1.Bd5+?
      • 1...Ke5
        • 2.Sd7#
        • 2.cxd8Q#
        • 2.cxd8S#
        • 2.cxd8B#
        • 2.cxd8R#
      • 1...Kxe7
        • 2.fxg8Q#
        • 2.fxg8R#
      • 1...Rxd5!
    • 1.Bf5+?
      • 1...Kxe7
        • 2.fxg8Q#
        • 2.fxg8R#
      • 1...Sxf5
        • 2.Re4#
      • 1...Ke5!
    • 1.Rd4+?
      • 1...Ke5
        • 2.cxd8Q#
        • 2.cxd8R#
      • 1...Kxe7
        • 2.cxd8Q#
        • 2.fxg8Q#
        • 2.fxg8R#
      • 1...Qc4!
    • 1.cxd8S+?
      • 1...Kxe7
        • 2.fxg8Q#
        • 2.fxg8R#
      • 1...Rxd8!
    • 1.c8Q+?
      • 1...Kxe7
        • 2.fxg8Q#
        • 2.fxg8R#
      • 1...Rd7+!
    • 1.c8B+?
      • 1...Kxe7
        • 2.fxg8Q#
        • 2.fxg8R#
      • 1...Rd7+!
  • Keys
    • 1.Bd3!
      • threat
        • 2.Re4#
      • 1...Ke5
        • 2.cxd8S#
      • 1...Kxe7
        • 2.fxg8Q#
      • 1...Bxe7
        • 2.c8Q#
        • 2.c8B#
      • 1...Sxe7
        • 2.cxd8S#
      • 1...Qe4
        • 2.Rxe4#
      • 1...Qe5
        • 2.fxg8Q#
        • 2.fxg8B#
      • 1...Se5
        • 2.f8S#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(e);P-FLIGHT,XS(J)::PXB(h)=Q
    • Q(c);OGATE,XB(C)::QAB(A)+R(B),DCHECK,XQ(c)
    • S(f);N_GUARD,SBLOCK::P=S
  • Tries
    • Try
      • B(C);CHECK
      • Vars
        • K(e);P-FLIGHT,XS(J)::PXB(h)=Q
      • Refutation
        • R(b);XB(C)
    • Try
      • B(C);CHECK
      • Vars
        • K(e);P-FLIGHT,XS(J)::PXB(h)=Q
        • S(d);XB(C)::QAB(A)+R(B),DCHECK
      • Refutation
        • K(e);P-FLIGHT
    • Try
      • R(B);CHECK
      • Vars
        • K(e);P-FLIGHT::PXB(g)=Q
      • Refutation
        • Q(c);P_SPINQ(c)
    • Try
      • P(I);CHECK,XB(g)
      • Vars
        • K(e);P-FLIGHT,XS(J)::PXB(h)=Q
      • Refutation
        • R(b);XS(I)
    • Try
      • P(I);CHECK
      • Vars
        • K(e);P-FLIGHT,XS(J)::PXB(h)=Q
      • Refutation
        • R(b);CHECK,P_SPINR(b)
    • Try
      • P(I);CHECK
      • Vars
        • K(e);P-FLIGHT,XS(J)::PXB(h)=Q
      • Refutation
        • R(b);CHECK,P_SPINR(b)
  • Actual
    • B(C);
    • Threat
      • QAB(A)+R(B),DCHECK
    • Vars
      • K(e);P-FLIGHT::PXB(g)=S
      • K(e);P-FLIGHT,XS(J)::PXB(h)=Q
      • B(g);SBLOCK,XS(J)::P=Q
      • S(f);SBLOCK,XS(J)::PXB(g)=S
      • Q(c);::QAB(A)+R(B),DCHECK,XQ(c)
      • Q(c);SBLOCK::PXB(h)=Q
      • S(f);N_GUARD,SBLOCK::P=S
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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).