MESON Chess Problem Database

Problem Display
PID: 63058 (5r2/3nN2B/6p1/r1n3NR/p4k2/K2b1p1P/5B2/Q7 w - - 0 1)

Stocchi, Ottavio

Arbejder-Skak, 1952

5r2/3nN2B/6p1/r1n3NR/p4k2/K2b1p1P/5B2/Q7

#2

8 + 9

45 Schach 1952
5407 Selected Stocchi (II) 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Rf5
      • 2.Sxg6#
    • 1...Bf5
      • 2.Sd5#
    • 1...Se4
      • 2.Se6#
    • 1...Se5
      • 2.Qc1#
  • Tries
    • 1.Se6+?
      • 1...Ke4
        • 2.Qd4#
      • 1...Sxe6!
    • 1.Be3+?
      • 1...Kg3
        • 2.Qg1#
      • 1...Kxe3!
    • 1.Qd4+?
      • 1...Se4
        • 2.Se6#
      • 1...Be4!
    • 1.Qe1?
      • threat
        • 2.Bg3#
        • 2.Qe3#
      • 1...gxh5
        • 2.Qe3#
      • 1...Be4
        • 2.Bg3#
      • 1...Se4
        • 2.Se6#
      • 1...Be2!
    • 1.Qg1?
      • threat
        • 2.Bg3#
        • 2.Qh2#
        • 2.Qg3#
      • 1...gxh5
        • 2.Qg3#
      • 1...Se4
        • 2.Se6#
      • 1...Ke5!
  • Keys
    • 1.Se4!
      • threat
        • 2.Rh4#
      • 1...Kxe4
        • 2.Qd4#
      • 1...Bxe4
        • 2.Qc1#
      • 1...Sxe4
        • 2.Sxg6#
      • 1...gxh5
        • 2.Sd5#
      • 1...Se5
        • 2.Qxe5#
      • 1...Sf6
        • 2.Qe5#
      • 1...g5
        • 2.Sd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • R(i);SBLOCK,S_CUTB(a)::S(G),XP(g)
    • B(a);SBLOCK::S(G)
    • S(f);N_GUARD,SBLOCK::S(E)
    • S(h);SBLOCK::QAB(A)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(d);P-FLIGHT,P_SPINP(g)::QAR1(A)
      • Refutation
        • S(f);XS(E)
    • Try
      • B(B);CHECK
      • Vars
        • K(d);S_FLIGHT::QAR2(A)
      • Refutation
        • K(d);S_FLIGHT,XB(B)
    • Try
      • Q(A);CHECK
      • Vars
        • S(f);P_SPINS(f)::S(E)
      • Refutation
        • B(a);P_SPINB(a)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(g);XR(F)::QAB1(A)
        • B(a);::B(B)
        • S(f);N_GUARD::S(E)
      • Refutation
        • B(a);
    • Try
      • Q(A);
      • Threat
        • DUALS(3)
      • Vars
        • P(g);XR(F)::QAB1(A)
        • S(f);N_GUARD,SBLOCK::S(E)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • S(E);
    • Threat
      • R(F)
    • Vars
      • K(d);OGATEB,P-FLIGHT,P_SPINP(g),XS(E)::QAR1(A)
      • B(a);SBLOCK,XS(E)::QAB(A)
      • S(f);SBLOCK,XS(E)::S(G),XP(g)
      • P(g);XR(F)::S(G)
      • S(h);N_GUARD::QAB1(A),XS(h)
      • S(h);N_GUARD::QAB1(A)
      • P(g);::S(G)
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).