MESON Chess Problem Database

Problem Display
PID: 182737 (1b6/4p3/4pp2/8/1pRPk1p1/1KP1NpP1/2PBN3/7Q w - - 0 1)

Tura, Waldemar

Boletim da UBP, 1990

1b6/4p3/4pp2/8/1pRPk1p1/1KP1NpP1/2PBN3/7Q

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...bxc3
      • 2.Sxc3#
    • 1...e5
      • 2.d5#
  • Tries
    • 1.Qh5?
      • threat
        • 2.d5#
      • 1...fxe2
        • 2.Qh1#
      • 1...f2
        • 2.Qh1#
      • 1...Be5
        • 2.dxe5#
      • 1...Ba7
        • 2.Qxg4#
      • 1...f5!
  • Keys
    • 1.Qh8!
      • 1...Bxg3
        • 2.Qa8#
      • 1...fxe2
        • 2.Qh1#
      • 1...bxc3
        • 2.Sxc3#
      • 1...f2
        • 2.Qh1#
      • 1...Bf4
        • 2.Qa8#
      • 1...Be5
        • 2.Qa8#
      • 1...Bd6
        • 2.Qa8#
      • 1...Ba7
        • 2.Qa8#
      • 1...Bc7
        • 2.Qa8#
      • 1...e5
        • 2.d5#
      • 1...f5
        • 2.d5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • P(b);XP(F)::S(D),XP(b)
    • P(e);SBLOCK::R(I)+P(J)
  • Tries
    • Try
      • Q(A);N_PINP(a)
      • Threat
        • R(I)+P(J)
      • Vars
        • P(a);OGATEB,XS(D)::QAB(A)
        • P(a);OGATEB::QAB(A)
        • B(h);OGATE::R(I)+P(J),XB(h)
        • B(h);N_GUARD::QAR2(A),XP(d)
      • Refutation
        • P(f);
  • Actual
    • Q(A);N_PINP(a)
    • Vars
      • B(h);OGATE,XP(H)::QAB(A)
      • P(a);OGATEB,XS(D)::QAB(A)
      • P(b);XP(F)::S(D),XP(b)
      • P(a);OGATEB::QAB(A)
      • B(h);OGATE::QAB(A)
      • P(e);SBLOCK::R(I)+P(J)
      • P(f);::R(I)+P(J)
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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).