MESON Chess Problem Database

Problem Display
PID: 110611 (8/4R3/1Pp1bp1B/b1R3P1/1nNpknP1/1K3Nq1/2P1BPp1/4Q3 w - - 0 1)

Sallay, Bela Albert

Magyarorszag, 1939

8/4R3/1Pp1bp1B/b1R3P1/1nNpknP1/1K3Nq1/2P1BPp1/4Q3

#2

13 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf2
      • 2.Sd2#
    • 1...Qh2
      • 2.Sd2#
    • 1...Qh4
      • 2.Sd2#
    • 1...Qxf3+
      • 2.Bd3#
    • 1...Qxg4
      • 2.Sd2#
    • 1...Sbd5
      • 2.Sd6#
    • 1...fxg5
      • 2.Re5#
    • 1...f5
      • 2.Re5#
  • Keys
    • 1.gxf6!
      • threat
        • 2.Re5#
      • 1...Qxf3+
        • 2.Bd3#
      • 1...Sxe2
        • 2.Qxe2#
      • 1...Sbd3
        • 2.Sg5#
      • 1...Sbd5
        • 2.Sd6#
      • 1...Sfd3
        • 2.Sd2#
      • 1...Sh3
        • 2.Bd1#
      • 1...Sfd5
        • 2.Sd2#
      • 1...Sh5
        • 2.Bd1#
      • 1...Sg6
        • 2.Bd1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 6
  • Sets
    • Q(b);N_PINS(F),P_PINS(G),XP(D)::S(F)
    • Q(b);N_PINS(F),P_PINS(G)::S(F)
    • Q(b);CHECK,P_PINS(G),SBLOCK,XS(F)::QAR(A)+B(C),DCHECK
    • Q(b);N_PINS(F),P_PINS(G),XP(H)::S(F)
    • S(c);::S(G)
    • P(j);N_GUARD,XP(J)::R1(I)
    • P(j);N_GUARD::R1(I)
  • Actual
    • P(J);XP(j)
    • Threat
      • R1(I)
    • Vars
      • Q(b);CHECK,P_PINS(G),SBLOCK,XS(F)::QAR(A)+B(C),DCHECK
      • S(f);OGATE,P_SPINS(f),XB(C)::QAR2(A),XS(f)
      • S(c);N_PINS(F),P_PINS(G)::S(F)
      • S(c);::S(G)
      • S(f);N_PINS(F),P_PINS(G)::S(F)
      • S(f);N_GUARD::QAR(A)+B(C)
      • S(f);::S(G)
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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).