MESON Chess Problem Database

Problem Display
PID: 25678 (2n5/3B2p1/8/3k1N2/pP2NP1p/r1PKP2r/8/n2R4 w - - 0 1)

Stocchi, Ottavio

2nd HM., L'Italia Scacchistica, 1930/I

2n5/3B2p1/8/3k1N2/pP2NP1p/r1PKP2r/8/n2R4

#2

9 + 8

3100 Selected Stocchi (I) 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Ra2
      • 2.c4#
    • 1...Rxc3+
      • 2.Sxc3#
    • 1...Rxe3+
      • 2.Sxe3#
    • 1...Sb3
      • 2.c4#
    • 1...Sb6
      • 2.Se7#
    • 1...Sd6
      • 2.Se7#
    • 1...Sa7
      • 2.Se7#
    • 1...Se7
      • 2.Sxe7#
    • 1...g5
      • 2.Sf6#
    • 1...g6
      • 2.Sf6#
  • Tries
    • 1.Ke2+?
      • 1...Kxe4
        • 2.Rd4#
      • 1...Kc4!
    • 1.Seg3?
      • threat
        • 2.e4#
      • 1...Rxc3+
        • 2.Kxc3#
      • 1...Sd6
        • 2.Se7#
      • 1...Rxg3!
  • Keys
    • 1.Sed6!
      • threat
        • 2.Ke2#
      • 1...Rxc3+
        • 2.Kxc3#
      • 1...Rxe3+
        • 2.Kxe3#
      • 1...Sxd6
        • 2.Se7#
      • 1...Ra2
        • 2.c4#
      • 1...Rh1
        • 2.e4#
      • 1...Rh2
        • 2.e4#
      • 1...Sc2
        • 2.Kxc2#
      • 1...Sb3
        • 2.c4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • R(b);N_PINP(B),P_PINP(D)::P(B)
    • R(b);CHECK,P_PINP(D),XP(B)::S(F),XR(b)
    • R(c);CHECK,XP(D)::S(H),XR(c)
    • S(a);N_PINP(B),P_PINP(D)::P(B)
    • S(h);N_GUARD::S(H)
    • S(h);N_GUARD::S(H),XS(h)
    • P(g);N_GUARD::S(F)
  • Tries
    • Try
      • K(C);CHECK,N_SPINP(B),S_FLIGHT
      • Vars
        • K(f);S_FLIGHT,XS(F)::R1(A)
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • S(F);
      • Threat
        • P(D)
      • Vars
        • R(b);CHECK,XP(B)::R(A)+K(C),XR(b)
        • S(h);N_GUARD,SBLOCK::S(H)
      • Refutation
        • R(c);XS(F)
  • Actual
    • S(F);
    • Threat
      • R(A)+K(C)
    • Vars
      • R(b);CHECK,P_PINP(D),XP(B)::R(A)+K(C),XR(b)
      • R(c);CHECK,XP(D)::R(A)+K(C),XR(c)
      • S(h);N_GUARD,SBLOCK,XS(F)::S(H)
      • R(b);N_PINP(B),P_PINP(D)::P(B)
      • R(c);OGATE::P(D)
      • S(a);::R(A)+K(C),XS(a)
      • S(a);N_PINP(B),P_PINP(D)::P(B)
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).