MESON Chess Problem Database

Problem Display
PID: 4539 (4Q3/rn6/pK6/6P1/1B1k4/1p2N1P1/3pP3/8 w - - 0 1)

Kockelkorn, Carl

Kohtz, Johannes

Zum Feierabend, 1877

4Q3/rn6/pK6/6P1/1B1k4/1p2N1P1/3pP3/8

#2

7 + 6

15 British Chess Magazine 1911
3360 Simple Two-move Themes 1924
5501 Chess Cameos 1936
5454 Near Snap 2009
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Sf5+?
      • 1...Kc4
        • 2.Qe4#
      • 1...Kd5!
    • 1.Ba3?
      • threat
        • 2.Bb2#
      • 1...Kc3
        • 2.Qe5#
        • 2.Qh8#
      • 1...b2
        • 2.Bxb2#
      • 1...d1S!
    • 1.Bc5+?
      • 1...Kc3
        • 2.Qe5#
        • 2.Qh8#
      • 1...Sxc5!
    • 1.Bd6?
      • threat
        • 2.Qe5#
      • 1...Kc3
        • 2.Qe5#
        • 2.Qh8#
      • 1...Sxd6!
  • Keys
    • 1.Be7!
      • threat
        • 2.Bf6#
      • 1...Kc3
        • 2.Qh8#
      • 1...Kxe3
        • 2.Bc5#
      • 1...Ke4
        • 2.Bc5#
        • 2.Bf6#
      • 1...Ke5
        • 2.Bc5#

This anticipates 120718(1910), 189750(1912), 196551(1995)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR2(G)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • B(D);
      • Threat
        • B(D)
      • Vars
        • P(b);::B(D),XP(b)
      • Refutation
        • P(a);
    • Try
      • B(D);CHECK
      • Refutation
        • S(f);XB(D)
    • Try
      • B(D);
      • Threat
        • QAB1(G)
      • Refutation
        • S(f);XB(D)
  • Actual
    • B(D);
    • Threat
      • B(D)
    • Vars
      • K(c);S_FLIGHT::QAB(G)
      • K(c);S_FLIGHT,XS(B)::QAR(G)+B(D),DCHECK
      • K(c);S_FLIGHT::QAR(G)+B(D)
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).