MESON Chess Problem Database

Problem Display
PID: 37997 (8/8/8/1K1N4/3b4/8/k2PR3/3Q4 w - - 0 1)

Selivanov, Andrei Vladimirovich

Problemist Pribuzhya, 1990

8/8/8/1K1N4/3b4/8/k2PR3/3Q4

#2

5 + 2

2786 More Fun with Chess Miniatures 2000
145 StrateGems 2011

SOLUTION

  • SOUND
  • Tries
    • 1.Qb3+?
      • 1...Ka1
        • 2.Re1#
      • 1...Kxb3!
    • 1.d3+?
      • 1...Ka3
        • 2.Qa4#
      • 1...Bb2!
  • Keys
    • 1.Ka4!
      • 1...Kb2
        • 2.d3#
      • 1...Ba1
        • 2.Qb3#
      • 1...Bg1
        • 2.d3#
        • 2.d4#
      • 1...Bb2
        • 2.Sb4#
      • 1...Bf2
        • 2.d3#
        • 2.d4#
      • 1...Bc3
        • 2.dxc3#
      • 1...Be3
        • 2.dxe3#
      • 1...Bc5
        • 2.d3#
        • 2.d4#
      • 1...Be5
        • 2.d4#
      • 1...Bb6
        • 2.d3#
        • 2.d4#
      • 1...Bf6
        • 2.d4#
      • 1...Ba7
        • 2.d3#
        • 2.d4#
      • 1...Bg7
        • 2.d4#
      • 1...Bh8
        • 2.d4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P-FLIGHT::R(C)
      • Refutation
        • K(a);S_FLIGHT,XQ(A)
    • Try
      • P(B);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(A)
      • Refutation
        • B(b);P_SPINB(b)
  • Actual
    • K(D);S_FLIGHT
    • Vars
      • K(a);P-FLIGHT::R(C)+P(B)
      • B(b);SBLOCK::QAB1(A)
      • B(b);SBLOCK::S(E)
      • B(b);OGATE::R(C)+P(B),XB(b)
      • B(b);OGATE::R(C)+P(B)
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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).