MESON Chess Problem Database

Problem Display
PID: 246488 (1K2R1B1/3Np2r/bBpp3p/Rn4pN/4k1Pp/2bp1n1r/2PP4/7Q w - - 0 1)

Zilahi, Zoltan

Sjakk-Nytt, 1947

1K2R1B1/3Np2r/bBpp3p/Rn4pN/4k1Pp/2bp1n1r/2PP4/7Q

#2

11 + 14

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sa3
      • 2.Bxh7#
    • 1...Sd4
      • 2.Sdf6#
    • 1...Sa7
      • 2.Bxh7#
    • 1...Sc7
      • 2.Bxh7#
    • 1...d5
      • 2.Bxh7#
    • 1...e5
      • 2.Sdf6#
  • Tries
    • 1.Bc4?
      • threat
        • 2.cxd3#
      • 1...dxc2
        • 2.d3#
      • 1...c5!
    • 1.Rxe7+?
      • 1...Be5
        • 2.Sdf6#
      • 1...Rxe7!
  • Keys
    • 1.Qf1!
      • threat
        • 2.Qxd3#
        • 2.cxd3#
      • 1...Sxd2
        • 2.Qf5#
      • 1...dxc2
        • 2.Qe2#
        • 2.d3#
      • 1...Rf7
        • 2.Qxd3#
      • 1...c5
        • 2.Qxd3#
      • 1...e6
        • 2.Qxd3#
      • 1...Se1
        • 2.Qf5#
      • 1...Sg1
        • 2.Qf5#
      • 1...Sh2
        • 2.Qf5#
      • 1...Sfd4
        • 2.Shf6#
      • 1...Se5
        • 2.Qf5#
      • 1...Sa3
        • 2.Bxh7#
      • 1...Sbd4
        • 2.Sdf6#
      • 1...Sa7
        • 2.Bxh7#
      • 1...Sc7
        • 2.Bxh7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 2
  • Sets
    • S(g);::B(K),XR(n)
    • S(g);S_CUTB(a)::S(H)
    • P(k);SBLOCK::B(K),XR(n)
    • P(m);S_CUTB(a)::S(H)
  • Tries
    • Try
      • B(K);
      • Threat
        • P(B),XP(b)
      • Vars
        • P(b);OGATE,XP(B)::P(C)
      • Refutation
        • P(j);
    • Try
      • R(J);CHECK,XP(m)
      • Vars
        • B(a);P_SPINB(a)::S(H)
      • Refutation
        • R(n);XR(J)
  • Actual
    • Q(A);N_PINS(c)
    • Threat
      • DUALS(2)
    • Vars
      • S(c);OGATE,XP(C)::QAB1(A)
      • R(n);::QAB1(A),XP(b)
      • P(j);::QAB1(A),XP(b)
      • P(m);::QAB1(A),XP(b)
      • S(c);OGATE::QAB1(A)
      • S(c);S_CUTB(a)::S(F)
      • S(c);N_SPINP(m),OGATE::QAB1(A)
      • S(g);::B(K),XR(n)
      • S(g);S_CUTB(a)::S(H)
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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).