MESON Chess Problem Database

Problem Display
PID: 11411 (b3qBB1/3pN3/2Q5/pP3R1p/Pk3n1r/1P2pK1p/3rp3/nN2b3 w - - 0 1)

Stocchi, Ottavio

1st Prize, Magyar Sakkvilag, 1938

b3qBB1/3pN3/2Q5/pP3R1p/Pk3n1r/1P2pK1p/3rp3/nN2b3

#2

10 + 14

3098 FIDE Album (1914-1944) (I) 1971
3100 Selected Stocchi (I) 2001
3666 Problem Paradise 2002

SOLUTION

  • SOUND
  • Sets
    • 1...Rd5
      • 2.Qc4#
    • 1...Bxc6+
      • 2.Sxc6#
    • 1...dxc6
      • 2.Sxc6#
    • 1...d5
      • 2.Qc3#
  • Tries
    • 1.Qe4+?
      • 1...Rd4
        • 2.Sc6#
      • 1...Bxe4+!
  • Keys
    • 1.b6!
      • threat
        • 2.Rb5#
      • 1...Bxc6+
        • 2.Sxc6#
      • 1...Sxb3
        • 2.Sd5#
      • 1...dxc6
        • 2.Sxc6#
      • 1...Rd5
        • 2.Qc4#
      • 1...Sd5
        • 2.Qb5#
      • 1...d5
        • 2.Qc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(c);N_PINQ(G)::QAR1(G)
    • B(m);CHECK,XQ(G)::B(I)+S(H),DCHECK,XB(m)
    • P(l);XQ(G)::B(I)+S(H),DCHECK,XP(l)
    • P(l);N_PINQ(G)::QAB1(G)
  • Tries
    • Try
      • Q(G);CHECK
      • Vars
        • R(c);P_SPINR(c)::B(I)+S(H),DCHECK
      • Refutation
        • B(m);CHECK,XQ(G)
  • Actual
    • P(E);
    • Threat
      • R1(F)
    • Vars
      • B(m);CHECK,XQ(G)::B(I)+S(H),DCHECK,XB(m)
      • S(a);SBLOCK,XP(B)::B(I)+S(H),DCHECK
      • P(l);XQ(G)::B(I)+S(H),DCHECK,XP(l)
      • R(c);N_PINQ(G)::QAR1(G)
      • S(h);N_PINQ(G)::QAR1(G)
      • P(l);N_PINQ(G)::QAB1(G)
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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).