MESON Chess Problem Database

Problem Display
PID: 263986 (3r3k/1nR3N1/4B1p1/5PN1/3B3q/7R/1K4n1/8 w - - 0 1)

Duverge, IJ

Tijdschrift vd KNSB, 1960

3r3k/1nR3N1/4B1p1/5PN1/3B3q/7R/1K4n1/8

#2

8 + 6

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qh6
      • 2.Rxh6#
    • 1...Qh7
      • 2.Rxh7#
    • 1...Ra8
      • 2.Se8#
    • 1...Rb8
      • 2.Se8#
    • 1...Rc8
      • 2.Se8#
    • 1...Re8
      • 2.Sxe8#
    • 1...Se1
      • 2.Rxh4#
    • 1...Se3
      • 2.Rxh4#
    • 1...Sd6
      • 2.Se8#
  • Tries
    • 1.Sh5+?
      • 1...Rxd4
        • 2.Rh7#
      • 1...Qxd4+!
  • Keys
    • 1.Rc8!
      • 1...Qxh3
        • 2.Sh5#
      • 1...Rxc8
        • 2.Se8#
      • 1...gxf5
        • 2.Sxf5#
      • 1...Qh5
        • 2.Sxh5#
      • 1...Qh6
        • 2.Rxh6#
      • 1...Qh7
        • 2.Rxh7#
      • 1...Re8
        • 2.Sxe8#
        • 2.Rxe8#
      • 1...Rf8
        • 2.Rxf8#
      • 1...Rg8
        • 2.Rxg8#
      • 1...Se1
        • 2.Rxh4#
      • 1...Se3
        • 2.Rxh4#
      • 1...Sf4
        • 2.Sh5#
      • 1...Sa5
        • 2.Rxd8#
      • 1...Sc5
        • 2.Rxd8#
      • 1...Sd6
        • 2.Se8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 3
  • Sets
    • Q(b);OGATE::R(B),XQ(b)
    • Q(b);OGATE::R1(B),XQ(b)
    • R(e);N_GUARD,SBLOCK::B(C)+S(H)
    • R(e);N_GUARD::B(C)+S(H)
    • R(e);N_GUARD::B(C)+S(H),XR(e)
    • S(a);N_GUARD::R(B),XQ(b)
    • S(d);S_CUTR(e)::B(C)+S(H)
  • Tries
    • Try
      • S(H);CHECK,N_PINQ(b)
      • Vars
        • R(e);XB(C)::R1(G)
      • Refutation
        • Q(b);CHECK,XB(C)
  • Actual
    • R(G);P_PINR(e)
    • Vars
      • Q(b);N_GUARD,N_SPINQ(b),XR(B)::B(C)+S(H)
      • R(e);N_GUARD,N_SPINR(e),XR(G)::B(C)+S(H)
      • P(c);XP(D)::B(C)+S(H),XP(c)
      • Q(b);N_GUARD::B(C)+S(H),XQ(b)
      • Q(b);OGATE::R(B),XQ(b)
      • Q(b);OGATE::R1(B),XQ(b)
      • R(e);OGATE::R(G),XR(e)
      • R(e);OGATE::R1(G),XR(e)
      • S(a);N_GUARD::R(B),XQ(b)
      • S(a);::B(C)+S(H)
      • S(d);N_GUARD::R(G),XR(e)
      • S(d);::B(C)+S(H)
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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).