MESON Chess Problem Database

Problem Display
PID: 175733 (q7/4Q3/2B5/2N2pB1/2PKp1Np/5kbP/3ppr1p/3rR1R1 w - - 0 1)

Vianna, Joao Caldas

Caissana Brasileira, 1898

q7/4Q3/2B5/2N2pB1/2PKp1Np/5kbP/3ppr1p/3rR1R1

#2

10 + 11

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Be5+
      • 2.Sxe5#
    • 1...fxg4
      • 2.Qxe4#
    • 1...f4
      • 2.Se5#
      • 2.Qxe4#
  • Keys
    • 1.Sxe4!
      • threat
        • 2.Sxd2#
      • 1...Qa1+
        • 2.Sc3#
      • 1...Qa7+
        • 2.Sc5#
      • 1...Qd8+
        • 2.Sd6#
      • 1...Qh8+
        • 2.Sef6#
      • 1...Be5+
        • 2.Sxe5#
      • 1...dxe1Q+
        • 2.Sd2#
      • 1...dxe1S+
        • 2.Sd2#
      • 1...dxe1B+
        • 2.Sd2#
      • 1...dxe1R+
        • 2.Sd2#
      • 1...Qxc6
        • 2.Qa3#
      • 1...fxe4
        • 2.Qxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 1
  • Sets
    • B(g);CHECK,N_GUARD::S(F),XB(g)
    • P(j);N_GUARD,XS(F)::QAB1(J),XP(h)
  • Actual
    • S(G);XP(h)
    • Threat
      • B(I)+S(G),DCHECK,XP(b)
    • Vars
      • Q(k);CHECK,N_GUARD::B(I)+S(G)
      • B(g);CHECK,N_GUARD::S(F),XB(g)
      • P(b);CHECK,XR(A)::B(I)+S(G),DCHECK
      • Q(k);N_GUARD,XB(I)::QAR(J)
      • P(j);OGATE,P_SPINP(j),XS(G)::QAB1(J),XP(j)
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).