MESON Chess Problem Database

Problem Display
PID: 97319 (5R2/B7/3pp1P1/4kB2/3RP1K1/4Qpb1/pp1r4/1q6 w - - 0 1)

Stocchi, Ottavio

Problemi di Ottavio Stocchi, 1995

5R2/B7/3pp1P1/4kB2/3RP1K1/4Qpb1/pp1r4/1q6

#2

8 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe4+
      • 2.Qxe4#
    • 1...Rxd4
      • 2.Bxd4#
      • 2.Qxd4#
    • 1...Be1
      • 2.Qf4#
    • 1...Bf2
      • 2.Qf4#
    • 1...Bf4
      • 2.Qxf4#
    • 1...Bh4
      • 2.Qf4#
    • 1...f2
      • 2.Qxg3#
    • 1...d5
      • 2.Bb8#
  • Tries
    • 1.Qg5?
      • threat
        • 2.Qf6#
      • 1...Qxe4+
        • 2.Bxe4#
      • 1...exf5+
        • 2.Qxf5#
      • 1...Bh4
        • 2.Qf4#
      • 1...d5!
  • Keys
    • 1.Qb3!
      • threat
        • 2.Qxe6#
      • 1...Qxe4+
        • 2.Rxe4#
      • 1...exf5+
        • 2.Rxf5#
      • 1...d5
        • 2.Qb8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 5
  • Sets
    • Q(a);CHECK,OGATE,P_SPINQ(a),XP(C)::QAR1(A),XQ(a)
    • B(f);N_GUARD::QAB1(A)
    • B(f);N_GUARD::QAB1(A),XB(f)
    • P(e);OGATE::QAB(A),XB(f)
    • P(h);OGATEB::B(G)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • Q(a);CHECK,OGATE,XP(C)::QAR(A)+B(E),XQ(a)
        • P(i);CHECK,OGATE,P_SPINP(i),XB(E)::QAR1(A),XP(i)
        • B(f);N_GUARD::QAB1(A)
      • Refutation
        • P(h);
  • Actual
    • Q(A);
    • Threat
      • QAR1(A),XP(i)
    • Vars
      • Q(a);CHECK,OGATE,XP(C)::R1(B),XQ(a)
      • P(i);CHECK,OGATE,XB(E)::R1(H),XP(i)
      • P(h);OGATEB::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).