MESON Chess Problem Database

Problem Display
PID: 143789 (6K1/bb6/2p1R1pN/8/5k1P/3n2p1/2N2n2/1Q4BB w - - 0 1)

Armeni, Alberto

Troll, 2011

6K1/bb6/2p1R1pN/8/5k1P/3n2p1/2N2n2/1Q4BB

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Sd1
      • 2.Re4#
    • 1...Sh3
      • 2.Re4#
    • 1...Se4
      • 2.Rxe4#
    • 1...Sg4
      • 2.Re4#
    • 1...Sc5
      • 2.Qc1#
    • 1...Se5
      • 2.Rf6#
  • Tries
    • 1.Sd4?
      • threat
        • 2.Se2#
      • 1...Sxh1
        • 2.Be3#
      • 1...Se5
        • 2.Qc1#
      • 1...g2
        • 2.Bh2#
      • 1...Sc1
        • 2.Qxc1#
      • 1...Bxd4!
    • 1.Qc1+?
      • 1...Be3
        • 2.Qxe3#
      • 1...Sxc1!
  • Keys
    • 1.Qd1!
      • threat
        • 2.Qf3#
      • 1...Sxd1
        • 2.Re4#
      • 1...Sxh1
        • 2.Qg4#
      • 1...g2
        • 2.Bh2#
      • 1...Se1
        • 2.Qd6#
      • 1...Se5
        • 2.Rf6#
      • 1...c5
        • 2.Qd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • S(a);N_GUARD::R1(F)
    • S(a);N_GUARD::R1(F),XS(a)
    • S(b);N_GUARD,S_CUTB(g)::QAB(A)
    • S(b);SBLOCK::R(F)
  • Tries
    • Try
      • S(D);
      • Threat
        • S(D)
      • Vars
        • S(a);OGATE,XB(C)::B(B)
        • S(b);N_GUARD::QAB(A)
        • P(c);OGATEB::B(B)
        • S(b);N_GUARD::QAB(A),XS(b)
      • Refutation
        • B(g);XS(D)
    • Try
      • Q(A);CHECK
      • Vars
        • B(g);N_GUARD,P_SPINB(g)::QAB1(A),XB(g)
      • Refutation
        • S(b);XQ(A)
  • Actual
    • Q(A);
    • Threat
      • QAR1(A)
    • Vars
      • S(a);N_GUARD,XQ(A)::R1(F)
      • S(a);N_GUARD,XB(C)::QAR1(A)
      • P(c);OGATEB::B(B)
      • S(b);OGATE::QAB(A)
      • S(b);SBLOCK::R(F)
      • P(e);S_CUTB(g)::QAB(A)
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).