MESON Chess Problem Database

Problem Display
PID: 223260 (8/8/4p3/1K2k1N1/RP2B2B/7P/1P3N2/4R3 w - - 0 1)

Pochin, VS

English Mechanic and World of Science, 1885

(First published on Fri Sep 18 1885)

8/8/4p3/1K2k1N1/RP2B2B/7P/1P3N2/4R3

#2

10 + 2

6490 yacpdb 2020
15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Sf3#
    • 1...Kf4
      • 2.Sd3#
  • Tries
    • 1.Kc5?
      • 1...Kf4
        • 2.Sd3#
      • 1...Kf6!
    • 1.Sg4+?
      • 1...Kd4
        • 2.Sf3#
        • 2.Sxe6#
        • 2.Bf2#
        • 2.Rd1#
      • 1...Kf4
        • 2.Sxe6#
        • 2.Rf1#
      • 1...Kd6!
    • 1.Sf3+?
      • 1...Kf4
        • 2.Sd3#
      • 1...Kd6!
    • 1.Sf7+?
      • 1...Kf4
        • 2.Sd3#
      • 1...Kd4!
    • 1.Bg3+?
      • 1...Kd4
        • 2.Sf3#
        • 2.Sxe6#
      • 1...Kf6!
    • 1.Ra6?
      • 1...Kd4
        • 2.Sf3#
      • 1...Kf4
        • 2.Sd3#
      • 1...Kf6!
  • Keys
    • 1.Ra7!
      • 1...Kd4
        • 2.Sf3#
      • 1...Kf4
        • 2.Sd3#
      • 1...Kd6
        • 2.Sf7#
      • 1...Kf6
        • 2.Sg4#
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::S(J)
    • K(a);S_FLIGHT::S(C)
  • Tries
    • Try
      • K(I);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::S(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(C);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(J);CHECK
      • Vars
        • K(a);S_FLIGHT::S(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(J);CHECK
      • Vars
        • K(a);S_FLIGHT::S(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(H);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(E);
      • Vars
        • K(a);S_FLIGHT::S(J)
        • K(a);S_FLIGHT::S(C)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
  • Actual
    • R(E);
    • Vars
      • K(a);S_FLIGHT::S(J)
      • K(a);S_FLIGHT::S(C)
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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).