Problem Display
PID: 117082 (5B2/2p5/R4K2/3k4/1R6/8/8/8 w - - 0 1)

Krizhanivsky, Vasil Viktorovich

Serp i molot, 1989

5B2/2p5/R4K2/3k4/1R6/8/8/8

#2

4 + 2


5454 Near Snap 2009
6490 yacpdb 2009

SOLUTION


  • SOUND
  • Sets
    • 1...c5
      • 2.Rd6#
  • Tries
    • 1.Kf5?
      • 1...c5
        • 2.Rd6#
      • 1...c6!
    • 1.Be7?
      • 1...c5
        • 2.Rd6#
      • 1...c6!
    • 1.Rba4?
      • 1...c5
        • 2.Rd6#
      • 1...c6!
    • 1.Rf4?
      • 1...c5
        • 2.Rd6#
      • 1...c6!
    • 1.Rg4?
      • 1...c5
        • 2.Rd6#
      • 1...c6!
    • 1.Rh4?
      • 1...c5
        • 2.Rd6#
      • 1...c6!
    • 1.Ra5+?
      • 1...c5
        • 2.Rxc5#
      • 1...Kc6!
  • Keys
    • 1.Re6!
      • 1...c6
        • 2.Re5#
      • 1...c5
        • 2.Rd6#

This anticipates 131635(1997)

FEATURES


  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(b);N_GUARD,SBLOCK::R1(B)
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Vars
        • P(b);N_GUARD,SBLOCK::R1(B)
      • Refutation
        • P(b);
    • Try
      • B(D);
      • Vars
        • P(b);N_GUARD,SBLOCK::R1(B)
      • Refutation
        • P(b);
    • Try
      • R(A);
      • Vars
        • P(b);N_GUARD,SBLOCK::R1(B)
      • Refutation
        • P(b);
    • Try
      • R(A);
      • Vars
        • P(b);N_GUARD,SBLOCK::R1(B)
      • Refutation
        • P(b);
    • Try
      • R(A);
      • Vars
        • P(b);N_GUARD,SBLOCK::R1(B)
      • Refutation
        • P(b);
    • Try
      • R(A);
      • Vars
        • P(b);N_GUARD,SBLOCK::R1(B)
      • Refutation
        • P(b);
    • Try
      • R(B);CHECK
      • Vars
        • P(b);P_SPINP(b)::R1(B),XP(b)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • R(B);
    • Vars
      • P(b);SBLOCK::R1(B)
      • P(b);N_GUARD,SBLOCK::R1(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).