MESON Chess Problem Database

Problem Display
PID: 143177 (8/8/2q1B2n/2N2p2/3B1k1K/2pQ3b/1p4pb/3n4 w - - 0 1)

Evans, TC

Social Chess Quarterly (The), 1934

8/8/2q1B2n/2N2p2/3B1k1K/2pQ3b/1p4pb/3n4

#2

5 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe6
      • 2.Sxe6#
    • 1...Bg1
      • 2.Qg3#
    • 1...Bg3+
      • 2.Qxg3#
    • 1...Sf2
      • 2.Qe3#
    • 1...Se3
      • 2.Qxe3#
    • 1...Sg4
      • 2.Qxf5#
  • Keys
    • 1.Bg1!
      • threat
        • 2.Bxh2#
      • 1...Bg3+
        • 2.Qxg3#
      • 1...Ke5
        • 2.Qd4#
      • 1...Bxg1
        • 2.Qg3#
      • 1...Se3
        • 2.Qxe3#
      • 1...Qf3
        • 2.Qd6#
      • 1...Sg4
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • Q(i);XB(E)::S(D),XQ(i)
    • B(d);N_GUARD::QAB1(A)
    • B(d);CHECK,N_GUARD::QAB1(A),XB(d)
    • S(a);N_GUARD::QAB1(A)
    • S(a);N_GUARD::QAB1(A),XS(a)
    • S(j);N_GUARD,S_CUTB(f)::QAR1(A),XP(h)
  • Actual
    • B(B);
    • Threat
      • B(B),XB(d)
    • Vars
      • B(d);CHECK,N_GUARD::QAB1(A),XB(d)
      • K(g);S_FLIGHT::QAB1(A)
      • B(d);N_GUARD,XB(B)::QAB1(A)
      • S(a);N_GUARD::QAB1(A),XS(a)
      • Q(i);N_GUARD,SBLOCK::QAB(A)
      • S(j);N_GUARD,S_CUTB(f)::QAR1(A),XP(h)
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).