MESON Chess Problem Database

Problem Display
PID: 196878 (2K1k1B1/2npp2R/2p4B/QR6/4N2b/1b6/7q/8 w - - 0 1)

Bettmann, Henry Wald

American Chess Bulletin, 1919

2K1k1B1/2npp2R/2p4B/QR6/4N2b/1b6/7q/8

#2

7 + 8

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Bd1
      • 2.Bf7#
    • 1...Bc2
      • 2.Bf7#
    • 1...Ba4
      • 2.Bf7#
    • 1...Bf7
      • 2.Bxf7#
    • 1...Sxb5
      • 2.Qd8#
    • 1...Sd5
      • 2.Bf7#
      • 2.Qd8#
    • 1...Sa6
      • 2.Qd8#
    • 1...Se6
      • 2.Bf7#
    • 1...Sa8
      • 2.Qd8#
    • 1...d5
      • 2.Bf7#
    • 1...e5
      • 2.Sd6#
  • Tries
    • 1.Qxc7?
      • threat
        • 2.Qd8#
        • 2.Qxd7#
      • 1...Qd6
        • 2.Qd8#
      • 1...Qd2
        • 2.Qd8#
      • 1...Qh3
        • 2.Qd8#
      • 1...Be6
        • 2.Qd8#
      • 1...d5
        • 2.Bf7#
        • 2.Qd8#
        • 2.Qxc6#
        • 2.Qd7#
      • 1...d6
        • 2.Qd8#
        • 2.Qxc6#
        • 2.Qd7#
      • 1...e5
        • 2.Sd6#
        • 2.Qxd7#
      • 1...e6
        • 2.Qxd7#
      • 1...Qxc7+!
  • Keys
    • 1.Rb8!
      • threat
        • 2.Kb7#
      • 1...Sb5
        • 2.Qd8#
      • 1...Sd5
        • 2.Bf7#
        • 2.Qd8#
      • 1...Sa6
        • 2.Qd8#
      • 1...Se6
        • 2.Bf7#
        • 2.Qh5#
      • 1...Sa8
        • 2.Qd8#
      • 1...d5
        • 2.Bf7#
      • 1...d6
        • 2.Kxc7#
      • 1...e5
        • 2.Sd6#
      • 1...e6
        • 2.Qh5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • B(b);N_GUARD::B(G)
    • B(b);N_GUARD::B(G),XB(b)
    • S(e);OGATE,XR(C)::QAR1(B)
    • S(e);OGATE::QAR1(B)
    • S(e);S_CUTB(b)::B(G)
    • P(f);S_CUTB(b)::B(G)
    • P(g);N_GUARD,S_CUTQ(a)::S(A)
  • Tries
    • Try
      • Q(B);XS(e)
      • Threat
        • DUALS(2)
      • Vars
        • Q(a);::QAR1(B)
        • B(b);::QAR1(B)
        • P(g);::QAB1(B),XP(f)
      • Refutation
        • Q(a);CHECK,XQ(B)
  • Actual
    • R(C);
    • Threat
      • R(C)+K(F)
    • Vars
      • S(e);OGATE::QAR1(B)
      • P(f);S_CUTB(b)::B(G)
      • P(f);::R(C)+K(F),XS(e)
      • P(g);N_GUARD,S_CUTQ(a)::S(A)
      • P(g);S_CUTB(b)::QAB(B)
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).