MESON Chess Problem Database

Problem Display
PID: 80743 (8/8/2p2K2/2k5/2bR4/8/1Q2P3/8 w - - 0 1)

Antipov, Viacheslav Pavlovich

Novgorodskaya pravda, 1983

8/8/2p2K2/2k5/2bR4/8/1Q2P3/8

#2

4 + 3

3713 Snap 2015
5454 Near Snap 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Ba2
      • 2.Qb4#
    • 1...Bxe2
      • 2.Qb4#
    • 1...Bd3
      • 2.Qb4#
    • 1...Bd5
      • 2.Qb4#
    • 1...Ba6
      • 2.Qb4#
    • 1...Be6
      • 2.Qb4#
    • 1...Bf7
      • 2.Qb4#
    • 1...Bg8
      • 2.Qb4#
  • Tries
    • 1.Qb7?
      • 1...Bxe2
        • 2.Qb4#
      • 1...Bd5
        • 2.Qb4#
      • 1...Ba2
        • 2.Qb4#
      • 1...Bb3
        • 2.Qb4#
      • 1...Bd3
        • 2.Qb4#
      • 1...Bb5
        • 2.Qa7#
      • 1...Ba6
        • 2.Qb4#
      • 1...Be6
        • 2.Qb4#
      • 1...Bf7
        • 2.Qb4#
      • 1...Bg8
        • 2.Qb4#
      • 1...Kxd4!
  • Keys
    • 1.Qb8!
      • 1...Kxd4
        • 2.Qe5#
      • 1...Bxe2
        • 2.Qb4#
      • 1...Ba2
        • 2.Qb4#
      • 1...Bb3
        • 2.Qb4#
      • 1...Bd3
        • 2.Qb4#
      • 1...Bb5
        • 2.Qa7#
      • 1...Bd5
        • 2.Qb4#
      • 1...Ba6
        • 2.Qb4#
      • 1...Be6
        • 2.Qb4#
      • 1...Bf7
        • 2.Qb4#
      • 1...Bg8
        • 2.Qb4#

Anticipated by 154096(1885), 154097(1898), 193929(1916)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(a);::QAB1(A)
    • B(a);XP(B)::QAB1(A)
  • Tries
    • Try
      • Q(A);
      • Vars
        • B(a);XP(B)::QAB1(A)
        • B(a);::QAB1(A)
        • B(a);SBLOCK::QAB(A)
      • Refutation
        • K(b);S_FLIGHT,XR(C)
  • Actual
    • Q(A);
    • Vars
      • K(b);S_FLIGHT,XR(C)::QAB1(A)
      • B(a);XP(B)::QAB1(A)
      • B(a);::QAB1(A)
      • B(a);SBLOCK::QAB(A)
HTML5 logo

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).