Problem Display
PID: 227461 (6K1/4B1p1/7k/4N3/6P1/8/8/8 w - - 0 1)

Steinmeyer, W

Frankische Arbeiter Schachzeitung, 1926

6K1/4B1p1/7k/4N3/6P1/8/8/8

#2

4 + 2


6490 yacpdb 2020
5454 Near Snap 2021

SOLUTION


  • SOUND
  • Sets
    • 1...g5
      • 2.Bf8#
    • 1...g6
      • 2.Sf7#
  • Tries
    • 1.Ba3?
      • 1...g5
        • 2.Bf8#
      • 1...g6
        • 2.Sf7#
      • 1...Kg5!
    • 1.Bb4?
      • 1...g5
        • 2.Bf8#
      • 1...g6
        • 2.Sf7#
      • 1...Kg5!
    • 1.Bh4?
      • 1...g6
        • 2.Sf7#
      • 1...g5!
    • 1.Bc5?
      • 1...g5
        • 2.Bf8#
      • 1...g6
        • 2.Sf7#
      • 1...Kg5!
    • 1.Bd6?
      • 1...g5
        • 2.Bf8#
      • 1...g6
        • 2.Sf7#
      • 1...Kg5!
    • 1.Bf6?
      • 1...g5
        • 2.Bg7#
      • 1...g6
        • 2.Sf7#
      • 1...gxf6!
    • 1.Bd8?
      • 1...g6
        • 2.Sf7#
      • 1...g5!
  • Keys
    • 1.Kh8!
      • 1...g5
        • 2.Bf8#
      • 1...g6
        • 2.Sf7#

This anticipates 17576(1947)

FEATURES


  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • P(b);OGATEB,SBLOCK::B(C)
    • P(b);SBLOCK::S(B)
  • Tries
    • Try
      • B(C);
      • Vars
        • P(b);OGATEB,SBLOCK::B(C)
        • P(b);SBLOCK::S(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(C);
      • Vars
        • P(b);OGATEB,SBLOCK::B(C)
        • P(b);SBLOCK::S(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(C);
      • Vars
        • P(b);SBLOCK::S(B)
      • Refutation
        • P(b);
    • Try
      • B(C);
      • Vars
        • P(b);OGATEB,SBLOCK::B(C)
        • P(b);SBLOCK::S(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(C);
      • Vars
        • P(b);OGATEB,SBLOCK::B(C)
        • P(b);SBLOCK::S(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(C);
      • Vars
        • P(b);SBLOCK::B(C)
        • P(b);SBLOCK::S(B)
      • Refutation
        • P(b);XB(C)
    • Try
      • B(C);
      • Vars
        • P(b);SBLOCK::S(B)
      • Refutation
        • P(b);
  • Actual
    • K(D);P-FLIGHT
    • Vars
      • P(b);OGATEB,SBLOCK::B(C)
      • P(b);SBLOCK::S(B)


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).