MESON Chess Problem Database

Problem Display
PID: 81190 (Q3K3/2ppBN2/6R1/5k1P/8/5n1N/1b1qRrnp/1b6 w - - 0 1)

Casa, Alex

Probleemblad, 1953

Q3K3/2ppBN2/6R1/5k1P/8/5n1N/1b1qRrnp/1b6

#2

8 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qe1
      • 2.Sh6#
    • 1...Qc3
      • 2.Sh6#
    • 1...Qb4
      • 2.Sh6#
    • 1...Qa5
      • 2.Sh6#
    • 1...Qh6
      • 2.Sxh6#
    • 1...Qd1
      • 2.Sh6#
    • 1...Qc2
      • 2.Sh6#
    • 1...Qd3
      • 2.Sh6#
    • 1...Qd4
      • 2.Sh6#
    • 1...Qd5
      • 2.Sh6#
    • 1...Qd6
      • 2.Sh6#
    • 1...Ba2
      • 2.Qe4#
    • 1...Be4
      • 2.Qxe4#
    • 1...Sf4
      • 2.Sh6#
    • 1...Sd4
      • 2.Re5#
      • 2.Qd5#
    • 1...Sg5
      • 2.Sh6#
    • 1...d5
      • 2.Qc8#
    • 1...d6
      • 2.Qc8#
  • Tries
    • 1.Rg5+?
      • 1...Sxg5
        • 2.Sh6#
      • 1...Qxg5!
    • 1.Qxf3+?
      • 1...Qf4
        • 2.Sh6#
        • 2.Rg5#
      • 1...Sf4
        • 2.Sh6#
        • 2.Rg5#
        • 2.Qg4#
      • 1...Rxf3!
  • Keys
    • 1.Qa4!
      • threat
        • 2.Qg4#
      • 1...Qb4
        • 2.Sh6#
        • 2.Qxd7#
      • 1...Qf4
        • 2.Qxd7#
      • 1...Qg5
        • 2.Qxd7#
      • 1...Qd4
        • 2.Sh6#
      • 1...Be4
        • 2.Qxe4#
      • 1...Bd4
        • 2.Qxd7#
      • 1...Se3
        • 2.Qf4#
      • 1...Sf4
        • 2.Sh6#
      • 1...Sd4
        • 2.Re5#
      • 1...Se5
        • 2.Rf6#
      • 1...Sg5
        • 2.Sh6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 13
  • Sets
    • Q(c);N_GUARD::S(F)
    • Q(c);N_GUARD::S(F),XQ(c)
    • B(a);N_GUARD::QAB1(G)
    • B(a);N_GUARD::QAB1(G),XB(a)
    • S(e);S_CUTQ(c)::S(F)
    • S(g);S_CUTQ(c)::S(F)
    • P(j);OGATEB::QAB(G)
  • Tries
    • Try
      • R(D);CHECK
      • Vars
        • S(g);XR(D)::S(F)
      • Refutation
        • Q(c);XR(D)
    • Try
      • Q(G);CHECK,XS(g)
      • Refutation
        • R(d);XQ(G)
  • Actual
    • Q(G);
    • Threat
      • QAB1(G)
    • Vars
      • Q(c);N_GUARD::QAB(G),XP(j)
      • Q(c);N_GUARD::S(F)
      • B(a);N_GUARD::QAB1(G),XB(a)
      • B(b);S_CUTQ(c)::QAB(G),XP(j)
      • S(e);N_GUARD,S_CUTQ(c)::QAR1(G)
      • S(e);S_CUTQ(c)::S(F)
      • S(g);N_GUARD,S_CUTB(b)::R1(A)
      • S(g);S_CUTB(b)::R1(D)
      • S(g);S_CUTQ(c)::S(F)
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).