MESON Chess Problem Database

Problem Display
PID: 33369 (4BK2/4Q3/4b2B/R1pPN3/2pPk1p1/b4p2/3R1p2/4r3 w - - 0 1)

Stocchi, Ottavio

Problemisten, 1949/I

4BK2/4Q3/4b2B/R1pPN3/2pPk1p1/b4p2/3R1p2/4r3

#2

9 + 9

3100 Selected Stocchi (I) 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd5
      • 2.Bc6#
    • 1...Kf5
      • 2.Bg6#
    • 1...Bxd5
      • 2.Bg6#
      • 2.Qh7#
  • Tries
    • 1.Sxc4?
      • threat
        • 2.Qxe6#
      • 1...Kf5
        • 2.Sd6#
      • 1...cxd4
        • 2.Bg6#
      • 1...Kxd5!
    • 1.Sxg4?
      • threat
        • 2.Qxe6#
      • 1...Kxd5
        • 2.Sf6#
      • 1...cxd4
        • 2.Bg6#
      • 1...Kf5!
    • 1.Sf7?
      • threat
        • 2.Qxe6#
      • 1...Kxd5
        • 2.Qb7#
      • 1...Kf5
        • 2.Sd6#
      • 1...cxd4!
    • 1.Qxe6?
      • threat
        • 2.Sxc4#
        • 2.Sxg4#
        • 2.Sc6#
        • 2.Sg6#
        • 2.Sd7#
        • 2.Sf7#
        • 2.Bg6#
      • 1...c3
        • 2.Sc4#
        • 2.Sxg4#
        • 2.Sc6#
        • 2.Sg6#
        • 2.Sd7#
        • 2.Sf7#
        • 2.Bg6#
      • 1...g3
        • 2.Sxc4#
        • 2.Sg4#
        • 2.Sc6#
        • 2.Sg6#
        • 2.Sd7#
        • 2.Sf7#
        • 2.Bg6#
      • 1...cxd4+!
  • Keys
    • 1.Sd7!
      • threat
        • 2.Qxe6#
      • 1...Kxd5
        • 2.Sf6#
      • 1...Kf5
        • 2.Qh7#
      • 1...cxd4
        • 2.Bg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(f);OGATEB,P_SPINP(h),S_FLIGHT,XP(D)::B(H)
    • K(f);S_FLIGHT::B(H)
  • Tries
    • Try
      • S(E);P_PINB(i),XP(e)
      • Threat
        • QAR2(G),XB(i)
      • Vars
        • K(f);N_SPINB(i),S_FLIGHT::S(E)
        • P(h);P_PINQ(G),XP(B)::B(H)
      • Refutation
        • K(f);N_SPINB(i),P_SPINP(h),S_FLIGHT,XP(D)
    • Try
      • S(E);P_PINB(i),XP(g)
      • Threat
        • QAR2(G),XB(i)
      • Vars
        • K(f);N_SPINB(i),P_SPINP(h),S_FLIGHT,XP(D)::S(E)
        • P(h);P_PINQ(G),XP(B)::B(H)
      • Refutation
        • K(f);N_SPINB(i),S_FLIGHT
    • Try
      • S(E);P_PINB(i)
      • Threat
        • QAR2(G),XB(i)
      • Vars
        • K(f);N_SPINB(i),OGATEB,P_SPINP(h),S_FLIGHT,XP(D)::QAB(G)
        • K(f);N_SPINB(i),S_FLIGHT::S(E)
      • Refutation
        • P(h);P_PINQ(G),XP(B)
    • Try
      • Q(G);XB(i)
      • Threat
        • DUALS(7)
      • Refutation
        • P(h);CHECK,XP(B)
  • Actual
    • S(E);P_PINB(i)
    • Threat
      • QAR2(G),XB(i)
    • Vars
      • K(f);N_SPINB(i),P_SPINP(h),S_FLIGHT,XP(D)::S(E)
      • K(f);N_SPINB(i),S_FLIGHT::QAB(G)
      • P(h);P_PINQ(G),XP(B)::B(H)
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).