MESON Chess Problem Database

Problem Display
PID: 102829 (1b6/p2N3p/R3p2q/2pk1p1p/nR6/2P4Q/7n/Kb3N2 w - - 0 1)

Bettmann, Edgar

Bettmann, Henry Wald

Bettmann, Jacob

Toronto Globe, 1882

1b6/p2N3p/R3p2q/2pk1p1p/nR6/2P4Q/7n/Kb3N2

#2

7 + 12

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qe3
      • 2.Sxe3#
    • 1...Qg7
      • 2.Se3#
    • 1...Qf8
      • 2.Se3#
    • 1...Qf6
      • 2.Se3#
    • 1...Qg6
      • 2.Se3#
    • 1...Ba2
      • 2.Qd3#
    • 1...Bd3
      • 2.Qxd3#
  • Keys
    • 1.Qe3!
      • threat
        • 2.c4#
      • 1...Qxe3
        • 2.Sxe3#
      • 1...Sxc3
        • 2.Qxc5#
      • 1...cxb4
        • 2.Qd4#
      • 1...Sb6
        • 2.Qxc5#
      • 1...Qf4
        • 2.Sf6#
        • 2.Qxe6#
      • 1...Qg7
        • 2.Qxe6#
      • 1...Qf6
        • 2.Sxf6#
      • 1...Ba2
        • 2.Qd3#
      • 1...Bd3
        • 2.Qxd3#
      • 1...Be5
        • 2.Qxe5#
      • 1...Sb2
        • 2.Qxc5#
      • 1...c4
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 6
    • REMOVED MATES = 2
  • Sets
    • Q(i);N_GUARD::S(B),XQ(i)
    • Q(i);N_GUARD,P_PINP(C)::S(B)
    • Q(i);N_GUARD::S(B)
    • B(a);N_GUARD::QAR2(D)
    • B(a);N_GUARD::QAR2(D),XB(a)
  • Actual
    • Q(D);
    • Threat
      • P(C)
    • Vars
      • Q(i);XQ(D)::S(B),XQ(i)
      • S(c);N_GUARD,XP(C)::QAR1(D),XP(d)
      • P(d);N_GUARD,XR(E)::QAR1(D)
      • S(c);N_GUARD::QAR1(D),XP(d)
      • Q(i);N_GUARD,P_PINP(C)::QAB1(D),XP(h)
      • Q(i);N_GUARD,P_PINP(C)::S(G),XQ(i)
      • B(a);N_GUARD::QAR2(D)
      • B(a);N_GUARD::QAR2(D),XB(a)
      • B(l);N_GUARD,P_PINP(C)::QAR1(D),XB(l)
      • P(d);N_GUARD::QAR1(D)
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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).