MESON Chess Problem Database

Problem Display
PID: 201541 (5Nn1/4p1nb/K7/4k3/1Q2P2B/8/1b1P1PN1/3R1r2 w - - 0 1)

Steiner, Siegmund

1st Prize, Deutsche Arbeiter Schachzeitung, 1922

5Nn1/4p1nb/K7/4k3/1Q2P2B/8/1b1P1PN1/3R1r2

#2

9 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd1
      • 2.f4#
    • 1...Re1
      • 2.f4#
    • 1...Rg1
      • 2.f4#
    • 1...Rh1
      • 2.f4#
    • 1...Se6
      • 2.Sd7#
    • 1...Sf6
      • 2.Bg3#
    • 1...e6
      • 2.Sd7#
  • Tries
    • 1.d4+?
      • 1...Bxd4
        • 2.Qxd4#
      • 1...Kxe4!
  • Keys
    • 1.Re1!
      • threat
        • 2.Qc5#
      • 1...Rxe1
        • 2.f4#
      • 1...Ba3
        • 2.d4#
      • 1...Bd4
        • 2.Qb8#
      • 1...Se6
        • 2.Sd7#
      • 1...Sf6
        • 2.Bg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • R(a);N_GUARD,XR(A)::P(C)
    • R(a);N_GUARD::P(C)
    • S(e);SBLOCK::S(I)
    • S(g);SBLOCK::B(G)
    • P(d);SBLOCK::S(I)
  • Tries
    • Try
      • P(B);CHECK
      • Vars
        • B(b);OGATE,XP(B)::QAB1(E),XB(b)
      • Refutation
        • K(c);P-FLIGHT,XP(F)
  • Actual
    • R(A);
    • Threat
      • QAR2(E)
    • Vars
      • R(a);N_GUARD,XR(A)::P(C)
      • B(b);N_GUARD::P(B)
      • B(b);SBLOCK::QAB(E)
      • S(e);SBLOCK::S(I)
      • S(g);SBLOCK::B(G)
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).