MESON Chess Problem Database

Problem Display
PID: 227829 (5b2/8/K1P1B3/2k1pN2/1Np1q3/B1pP1Q2/4n1b1/8 w - - 0 1)

Rothler, Emil

Uj Nemezdek, 1926

5b2/8/K1P1B3/2k1pN2/1Np1q3/B1pP1Q2/4n1b1/8

#2

8 + 8

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd3
      • 2.Sa2#
      • 2.Sc2#
      • 2.Sxd3#
    • 1...Qxf5
      • 2.Sc2#
    • 1...Qxc6+
      • 2.Sxc6#
    • 1...Qe3
      • 2.Sa2#
      • 2.Sc2#
    • 1...Qd4
      • 2.Sa2#
      • 2.Sc2#
    • 1...Qf4
      • 2.Sa2#
      • 2.Sc2#
    • 1...Qg4
      • 2.Sa2#
      • 2.Sc2#
    • 1...Qh4
      • 2.Sa2#
      • 2.Sc2#
  • Tries
    • 1.Qxe4?
      • threat
        • 2.Sa2#
        • 2.Sc2#
        • 2.Qxc4#
      • 1...cxd3
        • 2.Sa2#
        • 2.Sc2#
        • 2.Sxd3#
        • 2.Qc4#
      • 1...Sd4
        • 2.Sa2#
        • 2.Sc2#
      • 1...c2
        • 2.Sa2#
        • 2.Sxc2#
        • 2.Qxc4#
      • 1...Bxe4!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Sbc2#
      • 1...Qxc6+
        • 2.Sbxc6#
      • 1...Kxd4
        • 2.Sc2#
      • 1...Kd6
        • 2.Sd5#
      • 1...Sxd4
        • 2.Qxf8#
      • 1...exd4
        • 2.Qxf8#
      • 1...c2
        • 2.Sbxc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • Q(e);XS(E)::B(A)+S(D)
    • Q(e);CHECK,XP(G)::B(A)+S(D),XQ(e)
  • Tries
    • Try
      • Q(C);XQ(e)
      • Threat
        • DUALS(3)
      • Refutation
        • B(b);XQ(C)
  • Actual
    • S(E);
    • Threat
      • B(A)+S(D)
    • Vars
      • Q(e);CHECK,XP(G)::B(A)+S(D),XQ(e)
      • K(f);S_FLIGHT,XS(E)::S(D)
      • K(f);S_FLIGHT::B(A)+S(D)
      • S(a);SBLOCK,XS(E)::QAB(C),XB(h)
      • P(g);SBLOCK,XS(E)::QAB(C),XB(h)
      • P(c);::B(A)+S(D),XP(c)
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).