MESON Chess Problem Database

Problem Display
PID: 114200 (8/2R5/1n1pp3/3kqQnR/3P1P2/1K2Pr1r/5NB1/b2N4 w - - 0 1)

Stocchi, Ottavio

Volksgazet (Antwerpen) TT, 1953

8/2R5/1n1pp3/3kqQnR/3P1P2/1K2Pr1r/5NB1/b2N4

#2

10 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bc3
      • 2.Sxc3#
    • 1...Se4
      • 2.Qxe4#
    • 1...Sf7
      • 2.Qe4#
    • 1...Sh7
      • 2.Qe4#
  • Tries
    • 1.Bxf3+?
      • 1...Sxf3
        • 2.Qe4#
      • 1...Se4
        • 2.Bxe4#
        • 2.Qxe4#
      • 1...Rxf3!
    • 1.Qc2?
      • threat
        • 2.Qc6#
      • 1...Bc3
        • 2.Sxc3#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Qxe3+!
  • Keys
    • 1.Qd3!
      • threat
        • 2.Qb5#
      • 1...Qxd4
        • 2.e4#
      • 1...Qxe3
        • 2.Sxe3#
      • 1...Bxd4
        • 2.Sc3#
      • 1...Se4
        • 2.Qxe4#
      • 1...Sa4
        • 2.Qc4#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Sd7
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 3
  • Sets
    • B(a);N_GUARD,N_PINP(E)::S(A),XB(a)
    • S(f);N_GUARD,N_SPINR(b)::QAB1(H),XS(f)
    • S(f);N_GUARD::QAB1(H)
  • Tries
    • Try
      • B(C);CHECK,N_SPINP(E),XR(b)
      • Vars
        • S(f);N_GUARD,XB(C)::QAB1(H)
      • Refutation
        • R(c);P_PINP(E),XB(C)
    • Try
      • Q(H);N_PINQ(e)
      • Threat
        • QAB1(H)
      • Vars
        • B(a);N_GUARD,N_PINP(E)::S(A),XB(a)
        • S(g);N_GUARD::QAB1(H),XS(g)
      • Refutation
        • Q(e);CHECK,P_SPINS(f),XP(E)
  • Actual
    • Q(H);N_PINQ(e),N_SPINP(E)
    • Threat
      • QAR2(H)
    • Vars
      • Q(e);N_GUARD,P_SPINQ(e),P_SPINS(f),XP(F)::P(E)
      • Q(e);P_PINQ(H),P_SPINS(f),XP(E)::S(A),XQ(e)
      • B(a);N_GUARD,P_SPINB(a),XP(F)::S(A)
      • S(f);N_GUARD,N_SPINR(b),P_SPINQ(e)::QAB1(H),XS(f)
      • S(g);N_GUARD::QAB1(H)
      • S(g);N_GUARD::QAB1(H),XS(g)
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