MESON Chess Problem Database

Problem Display
PID: 96775 (3B4/rp6/4p3/1RPnkqRb/p2NN3/Q3P3/8/K6B w - - 0 1)

Valina, M

Problemas, 1973

3B4/rp6/4p3/1RPnkqRb/p2NN3/Q3P3/8/K6B

#2

10 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sb6
      • 2.cxb6#
    • 1...b6
      • 2.Sc6#
  • Tries
    • 1.Sd6?
      • threat
        • 2.Sc4#
      • 1...Sxe3
        • 2.Qxe3#
      • 1...Be2
        • 2.Sf7#
      • 1...Bf3
        • 2.Sxf3#
      • 1...Sb6
        • 2.cxb6#
      • 1...Se7!
    • 1.c6?
      • threat
        • 2.Bf6#
        • 2.Bc7#
        • 2.Qd6#
      • 1...Qxg5
        • 2.Bc7#
        • 2.Qd6#
      • 1...bxc6
        • 2.Sxc6#
        • 2.Bf6#
        • 2.Qd6#
      • 1...b6
        • 2.Bf6#
        • 2.Qd6#
      • 1...Bf3!
  • Keys
    • 1.Sf6!
      • threat
        • 2.Sd7#
      • 1...Sxe3
        • 2.Qxe3#
      • 1...Sxf6
        • 2.Bc7#
      • 1...Bf3
        • 2.Sxf3#
      • 1...Be8
        • 2.Sf3#
        • 2.Sg4#
      • 1...Sb6
        • 2.cxb6#
      • 1...b6
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(b);OGATE::R(G)+P(H),XS(b)
    • P(h);N_GUARD::S(E)
  • Tries
    • Try
      • S(F);
      • Threat
        • S(F)
      • Vars
        • S(b);OGATE,XP(D)::QAR2(C),XS(b)
        • B(e);N_GUARD::S(F)
        • B(e);N_GUARD::S(E),XB(e)
        • S(b);OGATE::R(G)+P(H),XS(b)
      • Refutation
        • S(b);
    • Try
      • P(H);P_PINS(b)
      • Threat
        • DUALS(3)
      • Refutation
        • B(e);
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • S(b);OGATE,XP(D)::QAR2(C),XS(b)
      • S(b);N_GUARD,SBLOCK,XS(F)::B(J)
      • B(e);N_GUARD::S(E),XB(e)
      • S(b);OGATE::R(G)+P(H),XS(b)
      • P(h);N_GUARD::S(E)
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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).