MESON Chess Problem Database

Problem Display
PID: 6965 (2B5/7q/pR2pr1n/K1N1k2P/2PR2b1/2P2rn1/3B3N/1Q6 w - - 0 1)

Szoghy, Jozsef

Christmas Card, 1935

2B5/7q/pR2pr1n/K1N1k2P/2PR2b1/2P2rn1/3B3N/1Q6

#2

11 + 9

1824 Schach-Welt 1935
4402 150 Valogatott Feladvanya 1943
268 Chess Life 1955
133 The Problemist Supplement 2006

SOLUTION

  • SOUND
  • Sets
    • 1...Qf5
      • 2.Sd7#
    • 1...Qg6
      • 2.Sd7#
    • 1...Qg8
      • 2.Sd7#
    • 1...Qd7
      • 2.Sxd7#
    • 1...Qh8
      • 2.Sd7#
    • 1...R3f5
      • 2.Sd3#
    • 1...R6f5
      • 2.Rxe6#
    • 1...Bf5
      • 2.Sxf3#
    • 1...Sgf5
      • 2.Re4#
      • 2.Qe4#
    • 1...Shf5
      • 2.Sxg4#
    • 1...Sf7
      • 2.Sxg4#
      • 2.Sd7#
    • 1...Sg8
      • 2.Sxg4#
  • Keys
    • 1.Qf5+!
      • 1...Kxf5
        • 2.Rd5#
      • 1...Qxf5
        • 2.Sd7#
      • 1...R3xf5
        • 2.Sd3#
      • 1...R6xf5
        • 2.Rxe6#
      • 1...Bxf5
        • 2.Sxf3#
      • 1...Sgxf5
        • 2.Re4#
      • 1...Shxf5
        • 2.Sxg4#
      • 1...exf5
        • 2.Rd5#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • Q(i);N_GUARD::S(H)
    • Q(i);N_GUARD::S(H),XQ(i)
    • R(a);N_GUARD,SBLOCK,S_CUTQ(i)::S(H)
    • R(g);N_GUARD,S_CUTB(c)::R1(J),XP(f)
    • B(c);N_GUARD,S_CUTR(g)::S(C),XR(a)
    • S(h);N_GUARD::S(C),XB(c)
  • Actual
    • Q(A);CHECK
    • Vars
      • K(d);P-FLIGHT,P_SPINP(f),XQ(A)::R(F)
      • Q(i);SBLOCK,XQ(A)::S(H)
      • R(a);SBLOCK,XQ(A)::S(H)
      • R(g);SBLOCK,XQ(A)::R1(J),XP(f)
      • B(c);SBLOCK,XQ(A)::S(C),XR(a)
      • S(b);SBLOCK,XQ(A)::R1(F)
      • S(h);SBLOCK,XQ(A)::S(C),XB(c)
      • P(f);XQ(A)::R1(F)
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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).