MESON Chess Problem Database

Problem Display
PID: 169250 (kbK1R3/8/1pP5/1N6/8/8/8/8 w - - 0 1)

Chernyavsky, Mykola Vasilovich

Markovtsy, Vassyl Yuriovich

SuperProblem, 2017

kbK1R3/8/1pP5/1N6/8/8/8/8

#2

4 + 3

5454 Near Snap 2018
6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Ba7
      • 2.Sc7#
    • 1...Bc7
      • 2.Kxc7#
  • Tries
    • 1.Re2?
      • 1...Bh2
        • 2.Ra2#
      • 1...Bg3
        • 2.Ra2#
      • 1...Bf4
        • 2.Ra2#
      • 1...Be5
        • 2.Ra2#
      • 1...Ba7
        • 2.Sc7#
      • 1...Bc7
        • 2.Ra2#
      • 1...Bd6!
    • 1.Re3?
      • 1...Bh2
        • 2.Ra3#
      • 1...Bg3
        • 2.Ra3#
      • 1...Bf4
        • 2.Ra3#
      • 1...Be5
        • 2.Ra3#
      • 1...Ba7
        • 2.Sc7#
      • 1...Bc7
        • 2.Ra3#
      • 1...Bd6!
    • 1.Re7?
      • 1...Bd6
        • 2.Ra7#
      • 1...Bh2
        • 2.Ra7#
      • 1...Bg3
        • 2.Ra7#
      • 1...Bf4
        • 2.Ra7#
      • 1...Be5
        • 2.Ra7#
      • 1...Ba7
        • 2.Sc7#
        • 2.Rxa7#
      • 1...Bc7!
    • 1.c7?
      • threat
        • 2.cxb8Q#
        • 2.cxb8R#
      • 1...Bxc7
        • 2.Kxc7#
      • 1...Ba7!
  • Keys
    • 1.Re4!
      • 1...Bh2
        • 2.Ra4#
      • 1...Bg3
        • 2.Ra4#
      • 1...Bf4
        • 2.Ra4#
      • 1...Be5
        • 2.Ra4#
      • 1...Bd6
        • 2.Ra4#
      • 1...Ba7
        • 2.Sc7#
      • 1...Bc7
        • 2.Ra4#

Anticipated by 153303(2012)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • B(c);N_GUARD,SBLOCK::S(A)
    • B(c);::R(D)+K(C),XB(c)
  • Tries
    • Try
      • R(D);
      • Vars
        • B(c);N_GUARD::R(D)
        • B(c);N_GUARD,SBLOCK::S(A)
      • Refutation
        • B(c);
    • Try
      • R(D);
      • Vars
        • B(c);N_GUARD::R(D)
        • B(c);N_GUARD,SBLOCK::S(A)
      • Refutation
        • B(c);
    • Try
      • R(D);
      • Vars
        • B(c);N_GUARD::R1(D)
      • Refutation
        • B(c);
    • Try
      • P(B);
      • Threat
        • PXB(c)=Q
      • Vars
        • B(c);XP(B)::R(D)+K(C),XB(c)
      • Refutation
        • B(c);
  • Actual
    • R(D);
    • Vars
      • B(c);N_GUARD::R(D)
      • B(c);N_GUARD,SBLOCK::S(A)
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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).