MESON Chess Problem Database

Problem Display
PID: 224729 (8/2p5/4p1n1/1NpR3p/1p1Bk2P/3pN1Q1/B4P2/3K2n1 w - - 0 1)

Decker, Adolfph L

HM., Columbia Chess Chronicle, 1888

8/2p5/4p1n1/1NpR3p/1p1Bk2P/3pN1Q1/B4P2/3K2n1

#2

9 + 9

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Se2
      • 2.f3#
    • 1...Sh3
      • 2.f3#
    • 1...Sf4
      • 2.Re5#
    • 1...Sxh4
      • 2.Re5#
    • 1...Se5
      • 2.Rxe5#
    • 1...Se7
      • 2.Re5#
    • 1...Sf8
      • 2.Re5#
    • 1...Sh8
      • 2.Re5#
    • 1...d2
      • 2.Bb1#
    • 1...b3
      • 2.Sc3#
    • 1...cxd4
      • 2.Rxd4#
    • 1...exd5
      • 2.Bxd5#
    • 1...c6
      • 2.Sd6#
  • Tries
    • 1.Qg4+?
      • 1...Sf4
        • 2.Re5#
      • 1...hxg4!
  • Keys
    • 1.Be5!
      • 1...Sxh4
        • 2.Qf4#
      • 1...Sxe5
        • 2.Rxe5#
      • 1...exd5
        • 2.Bxd5#
      • 1...Sf3
        • 2.Qxg6#
      • 1...Se2
        • 2.Qg2#
      • 1...Sh3
        • 2.Qg2#
      • 1...Sf4
        • 2.Qxf4#
      • 1...Se7
        • 2.Qf4#
      • 1...Sf8
        • 2.Qf4#
      • 1...Sh8
        • 2.Qf4#
      • 1...d2
        • 2.Bb1#
      • 1...b3
        • 2.Sc3#
      • 1...c4
        • 2.Rd4#
      • 1...c6
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 7
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • S(a);N_GUARD::P(C)
    • S(h);N_GUARD::R1(I)
    • S(h);N_GUARD,XP(G)::R1(I)
    • S(h);N_GUARD::R1(I),XS(h)
    • P(b);OGATEB::B(B)
    • P(c);N_GUARD::S(H)
    • P(e);OGATE,XB(F)::R1(I),XP(e)
    • P(g);OGATE,XR(I)::B(B),XP(g)
    • P(i);N_GUARD::S(H)
  • Tries
    • Try
      • Q(E);CHECK
      • Vars
        • S(h);P_SPINS(h)::R1(I)
      • Refutation
        • P(f);XQ(E)
  • Actual
    • B(F);
    • Vars
      • S(h);N_GUARD,XP(G)::QAR1(E)
      • S(h);OGATE,XB(F)::R1(I),XS(h)
      • P(g);OGATE,XR(I)::B(B),XP(g)
      • S(a);SBLOCK::QAB(E),XS(h)
      • S(a);N_GUARD::QAB(E)
      • S(h);N_GUARD::QAR1(E),XS(h)
      • S(h);N_GUARD::QAR1(E)
      • P(b);OGATEB::B(B)
      • P(c);N_GUARD::S(H)
      • P(e);N_GUARD::R1(I)
      • P(i);N_GUARD::S(H)
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).