MESON Chess Problem Database

Problem Display
PID: 78456 (8/2p2RnK/3kpp2/5P1Q/1P3N1N/r2p4/brq4B/4R2B w - - 0 1)

Mangalis, Laimons

1/2 Prize, The Sun-Herald, 1961

8/2p2RnK/3kpp2/5P1Q/1P3N1N/r2p4/brq4B/4R2B

#2

10 + 10

56 The Problemist 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Rxe6+?
      • 1...Bxe6
        • 2.Se2#
      • 1...Sxe6!
  • Keys
    • 1.fxe6!
      • threat
        • 2.Rd7#
      • 1...d2+
        • 2.Sd3#
      • 1...Bxe6
        • 2.Se2#
      • 1...Sxe6
        • 2.Sf5#
      • 1...Qg2
        • 2.Qc5#
      • 1...Bd5
        • 2.Qxd5#
      • 1...Qa4
        • 2.Qc5#
      • 1...Qc6
        • 2.Sfg2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(A);CHECK,XP(g)
      • Vars
        • B(a);XR(A)::B(C)+S(E)
      • Refutation
        • S(j);XR(A)
  • Actual
    • P(G);XP(g)
    • Threat
      • R1(I)
    • Vars
      • P(e);CHECK,S_CUTQ(c)::B(C)+S(E)
      • B(a);SBLOCK,XP(G)::B(C)+S(E)
      • S(j);N_GUARD,XP(G)::S(F)
      • Q(c);N_GUARD::QAB1(H)
      • B(a);N_GUARD::QAR1(H),XB(a)
      • Q(c);SBLOCK::B(C)+S(E)
HTML5 logo

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).