MESON Chess Problem Database

Problem Display
PID: 192270 (4B2b/4p3/p5nR/k1K1p3/1N2N1R1/2p5/6nQ/2r5 w - - 0 1)

Witt, Andreas

Sachsische Zeitung, 2001

(First published on Sat Apr 14 2001)

4B2b/4p3/p5nR/k1K1p3/1N2N1R1/2p5/6nQ/2r5

#2

7 + 9

16210 Problemschach-Jahrbuch (2001) 2002

SOLUTION

  • SOUND
  • Sets
    • 1...Se1
      • 2.Qa2#
    • 1...Se3
      • 2.Qa2#
    • 1...S2f4
      • 2.Qa2#
    • 1...S2h4
      • 2.Qa2#
    • 1...S6f4
      • 2.Rxa6#
    • 1...S6h4
      • 2.Rxa6#
    • 1...Sf8
      • 2.Rxa6#
  • Tries
    • 1.Sd2?
      • threat
        • 2.Sb3#
        • 2.Sc4#
        • 2.Sc6#
      • 1...Rb1
        • 2.Sc4#
        • 2.Sc6#
      • 1...Se3
        • 2.Sb3#
        • 2.Sc6#
      • 1...S2f4
        • 2.Sb3#
        • 2.Sc4#
      • 1...S6f4
        • 2.Sb3#
        • 2.Sc4#
        • 2.Rxa6#
      • 1...e4
        • 2.Sb3#
        • 2.Sc4#
        • 2.Qc7#
      • 1...cxd2+!
    • 1.Sf2?
      • threat
        • 2.Sc6#
      • 1...S6f4
        • 2.Rxa6#
      • 1...e4
        • 2.Qc7#
      • 1...S2f4!
    • 1.Sg3?
      • threat
        • 2.Sc6#
      • 1...S2f4
        • 2.Qa2#
      • 1...S6f4
        • 2.Rxa6#
      • 1...e4!
    • 1.Sd6?
      • threat
        • 2.Sc6#
        • 2.Sc4#
        • 2.Sb7#
      • 1...Se3
        • 2.Sc6#
        • 2.Sb7#
        • 2.Qa2#
      • 1...S2f4
        • 2.Sc4#
        • 2.Sb7#
        • 2.Qa2#
      • 1...S6f4
        • 2.Sc4#
        • 2.Sb7#
      • 1...e4
        • 2.Sc4#
        • 2.Sb7#
      • 1...exd6+!
    • 1.Sf6?
      • threat
        • 2.Sc6#
      • 1...S2f4
        • 2.Qa2#
      • 1...e4
        • 2.Qc7#
      • 1...S6f4!
    • 1.Qxe5?
      • threat
        • 2.Qc7#
      • 1...Sxe5
        • 2.Rxa6#
      • 1...Bxe5!
  • Keys
    • 1.Sg5!
      • threat
        • 2.Sc6#
      • 1...S2f4
        • 2.Qa2#
      • 1...S6f4
        • 2.Rxa6#
      • 1...e4
        • 2.Qc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 5
  • Sets
    • S(b);OGATE::QAR(A)
    • S(g);OGATE::R1(F),XP(f)
  • Tries
    • Try
      • S(C);
      • Threat
        • DUALS(3)
      • Refutation
        • P(c);CHECK,XS(C)
    • Try
      • S(C);
      • Threat
        • S(B)
      • Vars
        • S(g);OGATE::R1(F),XP(f)
        • P(e);OGATE::QAB(A)
      • Refutation
        • S(b);
    • Try
      • S(C);
      • Threat
        • S(B)
      • Vars
        • S(b);OGATE::QAR(A)
        • S(g);OGATE::R1(F),XP(f)
      • Refutation
        • P(e);
    • Try
      • S(C);
      • Threat
        • DUALS(3)
      • Refutation
        • P(h);CHECK,XS(C)
    • Try
      • S(C);
      • Threat
        • S(B)
      • Vars
        • S(b);OGATE::QAR(A)
        • P(e);OGATE::QAB(A)
      • Refutation
        • S(g);
    • Try
      • Q(A);XP(e)
      • Threat
        • QAB(A)
      • Vars
        • S(g);OGATE,XQ(A)::R1(F),XP(f)
      • Refutation
        • B(i);XQ(A)
  • Actual
    • S(C);
    • Threat
      • S(B)
    • Vars
      • S(b);OGATE::QAR(A)
      • S(g);OGATE::R1(F),XP(f)
      • P(e);OGATE::QAB(A)
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).