MESON Chess Problem Database

Problem Display
PID: 102946 (8/1b2B1pq/4B3/3pkPp1/3N3p/2P1pP1r/8/KQ4n1 w - - 0 1)

Bettmann, Edgar

Bettmann, Henry Wald

Bettmann, Jacob

Toronto Globe, 1882

8/1b2B1pq/4B3/3pkPp1/3N3p/2P1pP1r/8/KQ4n1

#2

8 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Bd6#
    • 1...Qxf5
      • 2.Qxf5#
    • 1...Ba6
      • 2.Qb8#
    • 1...Bc6
      • 2.Qb8#
    • 1...Ba8
      • 2.Qb8#
    • 1...Bc8
      • 2.Qb8#
  • Tries
    • 1.Sc6+?
      • 1...Bxc6
        • 2.Qb8#
      • 1...Kf4!
    • 1.Qd3?
      • threat
        • 2.Qxe3#
      • 1...Kf4
        • 2.Bd6#
      • 1...Qxf5
        • 2.Qxf5#
      • 1...e2
        • 2.Qe3#
      • 1...Rxf3!
  • Keys
    • 1.Bxd5!
      • threat
        • 2.Qe4#
      • 1...Kf4
        • 2.Bd6#
      • 1...Kxd5
        • 2.Qb5#
      • 1...Qxf5
        • 2.Qxf5#
      • 1...Bxd5
        • 2.Qb8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • K(f);S_FLIGHT::B(H)
    • Q(j);OGATE,XP(F)::QAR1(B),XQ(j)
    • B(h);OGATE::QAB(B)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • B(h);OGATE,XS(E)::QAB(B)
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • Q(B);
      • Threat
        • QAR2(B),XP(b)
      • Vars
        • K(f);S_FLIGHT::B(H)
        • Q(j);OGATE,XP(F)::QAR1(B),XQ(j)
        • P(b);::QAR2(B)
      • Refutation
        • R(c);XP(D)
  • Actual
    • B(G);XP(e)
    • Threat
      • QAR1(B)
    • Vars
      • K(f);S_FLIGHT::B(H)
      • K(f);OGATEB,P-FLIGHT,XB(G)::QAR2(B)
      • Q(j);OGATE,XP(F)::QAR1(B),XQ(j)
      • B(h);OGATE,SBLOCK,XB(G)::QAB(B)
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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).