MESON Chess Problem Database

Problem Display
PID: 192264 (5rq1/3b3N/2pP2Q1/2R2B2/4pk1r/R4N1p/2p2P2/2K5 w - - 0 1)

Righi, Mario

Sachsische Zeitung, 2001

(First published on Sat Mar 17 2001)

5rq1/3b3N/2pP2Q1/2R2B2/4pk1r/R4N1p/2p2P2/2K5

#2

9 + 9

16210 Problemschach-Jahrbuch (2001) 2002

SOLUTION

  • SOUND
  • Sets
    • 1...Qa2
      • 2.Qg3#
      • 2.Qg5#
    • 1...Qb3
      • 2.Qg3#
    • 1...Qc4
      • 2.Qg3#
      • 2.Qg5#
    • 1...Qd5
      • 2.Qg5#
    • 1...Qe6
      • 2.Qg3#
      • 2.Qg5#
    • 1...Qf7
      • 2.Qg3#
      • 2.Qg5#
    • 1...Qxh7
      • 2.Qg3#
      • 2.Qg5#
    • 1...Qh8
      • 2.Qg3#
      • 2.Qg5#
  • Tries
    • 1.Sg1?
      • threat
        • 2.Se2#
      • 1...Qb3
        • 2.Qg5#
      • 1...Qc4
        • 2.Qg3#
        • 2.Qg5#
      • 1...e3
        • 2.fxe3#
      • 1...Qd5!
    • 1.Qh6+?
      • 1...Qg5
        • 2.Qxg5#
      • 1...Rxh6!
    • 1.Qxg8?
      • threat
        • 2.Qg3#
        • 2.Qg5#
      • 1...Rxf5
        • 2.Qg3#
      • 1...e3
        • 2.Qg3#
      • 1...Rg4
        • 2.Qxg4#
      • 1...Rh5
        • 2.Qg3#
        • 2.Qg4#
      • 1...Rxg8!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Se2#
      • 1...Qd5
        • 2.Qg3#
      • 1...Qb3
        • 2.Qg5#
      • 1...Qc4
        • 2.Qg3#
        • 2.Qg5#
      • 1...e3
        • 2.fxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • Q(i);N_GUARD::QAB1(H)
  • Tries
    • Try
      • S(D);
      • Threat
        • S(D)
      • Vars
        • Q(i);N_GUARD::QAB1(H)
        • P(c);OGATE::P(B),XP(c)
      • Refutation
        • Q(i);
    • Try
      • Q(H);CHECK
      • Vars
        • Q(i);N_GUARD,P_SPINQ(i)::QAB1(H),XQ(i)
      • Refutation
        • R(e);XQ(H)
    • Try
      • Q(H);XQ(i)
      • Threat
        • DUALS(2)
      • Vars
        • R(h);XB(F)::QAB1(H)
        • P(c);::QAB1(H)
        • R(e);N_GUARD::QAR1(H),XR(e)
      • Refutation
        • R(h);XQ(H)
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • Q(i);N_GUARD::QAB1(H)
      • P(c);OGATE::P(B),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).