MESON Chess Problem Database

Problem Display
PID: 176095 (4K3/8/8/B1pBk1p1/2P1P3/8/2P1QP2/8 w - - 0 1)

Schmidt, Joachim

Schach-Echo, 1939

4K3/8/8/B1pBk1p1/2P1P3/8/2P1QP2/8

#2

8 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Bc7#
    • 1...Kd6
      • 2.e5#
  • Tries
    • 1.Bc7+?
      • 1...Kd4
        • 2.Qd3#
        • 2.Qd2#
        • 2.Qe3#
      • 1...Kf6!
    • 1.Bd8?
      • 1...Kd4
        • 2.Bf6#
      • 1...Kf4
        • 2.Bc7#
      • 1...Kd6
        • 2.e5#
      • 1...g4!
    • 1.Qf3?
      • 1...Kd4
        • 2.Bc3#
        • 2.Qc3#
        • 2.Qf6#
      • 1...Kd6
        • 2.Qg3#
        • 2.Qf6#
      • 1...g4!
  • Keys
    • 1.Qh5!
      • 1...Kd4
        • 2.Qh8#
      • 1...Kf4
        • 2.Bc7#
      • 1...Kd6
        • 2.Qh2#
      • 1...Kf6
        • 2.Bc3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::B(F)
    • K(b);OGATE,S_FLIGHT::P(E)
  • Tries
    • Try
      • B(F);CHECK
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • B(F);
      • Vars
        • K(b);S_FLIGHT::B(F)
        • K(b);OGATE,S_FLIGHT::P(E)
      • Refutation
        • P(c);
    • Try
      • Q(B);
      • Refutation
        • P(c);
  • Actual
    • Q(B);P_PINP(c)
    • Vars
      • K(b);N_SPINP(c),S_FLIGHT::QAB(B)
      • K(b);N_SPINP(c),S_FLIGHT::B(F)
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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).