Problem Display
PID: 193952 (8/8/1p5B/1K6/8/8/Pk3P2/1BR5 w - - 0 1)

Mortriner, Lucius

Our Young People, 1916

8/8/1p5B/1K6/8/8/Pk3P2/1BR5

#2

6 + 2


6490 yacpdb 2019
5454 Near Snap 2020

SOLUTION


  • SOUND
  • Sets
    • 1...Ka1
      • 2.Bg7#
  • Tries
    • 1.Ka4?
      • 1...Ka1
        • 2.Bg7#
      • 1...b5+!
    • 1.Kb4?
      • 1...Ka1
        • 2.Bg7#
      • 1...b5!
    • 1.Kxb6?
      • 1...Ka1
        • 2.Bg7#
      • 1...Ka3!
    • 1.Bd2?
      • 1...Ka1
        • 2.Bc3#
      • 1...Ka3!
    • 1.Be3?
      • 1...Ka1
        • 2.Bd4#
      • 1...Ka3!
    • 1.Bf4?
      • 1...Ka1
        • 2.Be5#
      • 1...Ka3!
    • 1.Bg5?
      • 1...Ka1
        • 2.Bf6#
      • 1...Ka3!
    • 1.Bf8?
      • 1...Ka1
        • 2.Bg7#
      • 1...Kxc1!
    • 1.Re1?
      • 1...Ka1
        • 2.Bg7#
      • 1...Ka3
        • 2.Bc1#
      • 1...Kc3!
    • 1.Rf1?
      • 1...Ka1
        • 2.Bg7#
      • 1...Ka3
        • 2.Bc1#
      • 1...Kc3!
    • 1.Rg1?
      • 1...Ka1
        • 2.Bg7#
      • 1...Ka3
        • 2.Bc1#
      • 1...Kc3!
    • 1.Rh1?
      • 1...Ka1
        • 2.Bg7#
      • 1...Ka3
        • 2.Bc1#
      • 1...Kc3!
    • 1.f3?
      • 1...Ka1
        • 2.Bg7#
      • 1...Ka3!
  • Keys
    • 1.Rd1!
      • 1...Ka1
        • 2.Bg7#
      • 1...Ka3
        • 2.Bc1#
      • 1...Kc3
        • 2.Bg7#

This anticipates 86153(1972)

FEATURES


  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::B(F)
  • Tries
    • Try
      • K(E);S_FLIGHT
      • Vars
        • K(a);S_FLIGHT::B(F)
      • Refutation
        • P(b);CHECK
    • Try
      • K(E);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::B(F)
      • Refutation
        • P(b);
    • Try
      • K(E);P-FLIGHT,XP(b)
      • Vars
        • K(a);S_FLIGHT::B(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(F);
      • Vars
        • K(a);S_FLIGHT::B(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(F);
      • Vars
        • K(a);S_FLIGHT::B(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(F);
      • Vars
        • K(a);S_FLIGHT::B(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(F);
      • Vars
        • K(a);S_FLIGHT::B(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(F);
      • Vars
        • K(a);S_FLIGHT::B(F)
      • Refutation
        • K(a);S_FLIGHT,XR(B)
    • Try
      • R(B);
      • Vars
        • K(a);S_FLIGHT::B(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(B);
      • Vars
        • K(a);S_FLIGHT::B(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(B);
      • Vars
        • K(a);S_FLIGHT::B(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(B);
      • Vars
        • K(a);S_FLIGHT::B(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • P(D);
      • Vars
        • K(a);S_FLIGHT::B(F)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • R(B);
    • Vars
      • K(a);S_FLIGHT::B(F)


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).