MESON Chess Problem Database

Problem Display
PID: 187297 (2R5/3pB1n1/5P2/KN2kr2/2R1p3/4p1PQ/B3Pn2/8 w - - 0 1)

Shanshin, Valery Yurevich

Suomen Shakki, 1982

2R5/3pB1n1/5P2/KN2kr2/2R1p3/4p1PQ/B3Pn2/8

#2

10 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.R4c5#
    • 1...Ke6
      • 2.Rxe4#
  • Tries
    • 1.R8c5+?
      • 1...Ke6
        • 2.Rxe4#
      • 1...d5!
  • Keys
    • 1.Sd6!
      • 1...Ke6+
        • 2.R4c5#
      • 1...Kd5
        • 2.Rxe4#
      • 1...Rxf6
        • 2.R8c5#
      • 1...Sxh3
        • 2.Rxe4#
      • 1...Rf3
        • 2.R8c5#
      • 1...Rf4
        • 2.R8c5#
      • 1...Rg5
        • 2.R8c5#
      • 1...Rh5
        • 2.R8c5#
      • 1...Sd1
        • 2.Rxe4#
      • 1...Sh1
        • 2.Rxe4#
      • 1...Sd3
        • 2.Rxe4#
      • 1...Sg4
        • 2.Rxe4#
      • 1...Sh5
        • 2.Qxf5#
      • 1...Se6
        • 2.Qxf5#
      • 1...Se8
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 13
    • REMOVED MATES = 0
  • Sets
    • K(d);P-FLIGHT::B(A)+R(E),DCHECK
    • K(d);P-FLIGHT,P_PINS(G),P_SPINR(e)::B(A)+R(E),DCHECK,XP(c)
  • Tries
    • Try
      • R(J);CHECK
      • Vars
        • K(d);P-FLIGHT,P_SPINR(e)::B(A)+R(E),DCHECK,XP(c)
      • Refutation
        • P(f);P_SPINP(f)
  • Actual
    • S(G);
    • Vars
      • K(d);CHECK,P-FLIGHT,P_SPINR(e)::B(A)+R(E)
      • K(d);P-FLIGHT::B(A)+R(E),XP(c)
      • R(e);XP(H)::R(J)
      • S(a);N_GUARD,XQ(D)::R1(E),XP(c)
      • R(e);::R(J)
      • S(a);N_GUARD::R1(E),XP(c)
      • S(g);N_GUARD::QAR1(D),XR(e)
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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).