MESON Chess Problem Database

Problem Display
PID: 63468 (2R5/Q7/2r2NBK/B1r1pN2/P1kq1n1R/1p6/3PP3/2b5 w - - 0 1)

Benedek, Attila

Szoghy, Jozsef

1st Prize, SSZB Tajokoztato, 1976

2R5/Q7/2r2NBK/B1r1pN2/P1kq1n1R/1p6/3PP3/2b5

#2

11 + 8

3771 FIDE Album (1974-1976) 1980
14674 Attila Benedek - That's All 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Qa1
      • 2.d3#
    • 1...Qg1
      • 2.d3#
    • 1...Qb2
      • 2.d3#
    • 1...Qf2
      • 2.d3#
    • 1...Ra6
      • 2.Qxa6#
    • 1...Sxe2
      • 2.Se3#
    • 1...Sd3
      • 2.Se3#
    • 1...Sh3
      • 2.Se3#
    • 1...Sh5
      • 2.Se3#
    • 1...Se6
      • 2.Se3#
    • 1...Sxg6
      • 2.Se3#
  • Tries
    • 1.Qa6+?
      • 1...Rb5
        • 2.Qxb5#
      • 1...Rxa6!
  • Keys
    • 1.Bf7+!
      • 1...Qd5
        • 2.d3#
      • 1...Rd5
        • 2.Sd6#
      • 1...Re6
        • 2.Qa6#
      • 1...Sd5
        • 2.Se3#
      • 1...Se6
        • 2.Se3#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 10
  • Sets
    • Q(d);N_GUARD,P_SPINS(e)::P(A)
    • R(h);N_GUARD,P_SPINR(f)::QAB(J),XR(h)
    • S(e);P_PINP(A),P_SPINQ(d),XP(B)::S(F)
    • S(e);P_PINP(A),P_SPINQ(d)::S(F)
    • S(e);P_PINP(A),P_SPINQ(d),XB(H)::S(F)
  • Tries
    • Try
      • Q(J);CHECK
      • Vars
        • R(f);N_GUARD,P_SPINR(f)::QAB1(J),XR(f)
      • Refutation
        • R(h);P_SPINR(f),XQ(J)
  • Actual
    • B(H);CHECK,P_SPINS(G)
    • Vars
      • Q(d);P_SPINQ(d),P_SPINS(e)::P(A)
      • R(f);P_SPINR(f)::S(F)
      • R(h);P_SPINR(f)::QAB(J)
      • S(e);P_PINP(A),P_SPINQ(d),P_SPINS(e)::S(F)
      • S(e);N_PINS(G),P_PINP(A),P_SPINQ(d),P_SPINS(e)::S(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).