MESON Chess Problem Database

Problem Display
PID: 168943 (1N1K4/kp6/8/8/3R4/6B1/6B1/8 w - - 0 1)

Murashev, Pavel Aleksandrovich

SuperProblem, 2014

1N1K4/kp6/8/8/3R4/6B1/6B1/8

#2

5 + 2

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Ka8
      • 2.Ra4#
    • 1...b6
      • 2.Ra4#
      • 2.Rd7#
  • Tries
    • 1.Kc7?
      • threat
        • 2.Ra4#
      • 1...Ka8
        • 2.Ra4#
      • 1...b5!
    • 1.Bc7?
      • threat
        • 2.Ra4#
      • 1...Ka8
        • 2.Ra4#
      • 1...b5!
    • 1.Rb4?
      • 1...Ka8
        • 2.Ra4#
      • 1...b6
        • 2.Ra4#
      • 1...b5!
    • 1.Rd5?
      • 1...Kb6
        • 2.Bf2#
      • 1...Ka8
        • 2.Ra5#
      • 1...b6
        • 2.Rd7#
      • 1...b5!
  • Keys
    • 1.Rd6!
      • 1...Ka8
        • 2.Ra6#
      • 1...Kxb8
        • 2.Ra6#
      • 1...b5
        • 2.Ra6#
      • 1...b6
        • 2.Rd7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT,P_SPINP(b)::R(C)
  • Tries
    • Try
      • K(E);S_FLIGHT
      • Threat
        • R(C)
      • Vars
        • K(a);P-FLIGHT,P_SPINP(b)::R(C)
      • Refutation
        • P(b);
    • Try
      • B(B);
      • Threat
        • R(C)
      • Vars
        • K(a);P-FLIGHT,P_SPINP(b)::R(C)
      • Refutation
        • P(b);
    • Try
      • R(C);
      • Vars
        • K(a);P-FLIGHT,P_SPINP(b)::R(C)
        • P(b);SBLOCK::R(C)
      • Refutation
        • P(b);
    • Try
      • R(C);
      • Vars
        • K(a);S_FLIGHT::B(B)
        • K(a);P-FLIGHT::R(C)
        • P(b);OGATEB,SBLOCK::R(C)
      • Refutation
        • P(b);
  • Actual
    • R(C);
    • Vars
      • K(a);P-FLIGHT,P_SPINP(b)::R(C)
      • K(a);S_FLIGHT,XS(D)::B(B)+R(C)
      • P(b);N_GUARD::R1(C)
      • P(b);OGATEB,SBLOCK::R(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).