MESON Chess Problem Database

Problem Display
PID: 29875 (7B/5Nnr/Q7/2P3N1/PPPk2pR/K1pnp1b1/1p3p2/1bq2B2 w - - 0 1)

Stocchi, Ottavio

2nd Place, Express Wieczorny, 1948

7B/5Nnr/Q7/2P3N1/PPPk2pR/K1pnp1b1/1p3p2/1bq2B2

#2

11 + 12

3100 Selected Stocchi (I) 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Sf4
      • 2.Qf6#
    • 1...Se5
      • 2.Qd6#
  • Tries
    • 1.Rxg4+?
      • 1...Sf4
        • 2.Qd6#
        • 2.Qf6#
      • 1...Bf4!
    • 1.Qc6?
      • threat
        • 2.Qe4#
        • 2.Qd5#
      • 1...Kxc4
        • 2.Qe4#
      • 1...Sxb4
        • 2.Sf3#
        • 2.Se6#
      • 1...Sxc5
        • 2.Sf3#
        • 2.Qd5#
        • 2.Qxc5#
      • 1...e2
        • 2.Qe4#
      • 1...Se1
        • 2.Se6#
        • 2.Qd5#
      • 1...Sf4
        • 2.Qf6#
      • 1...Se5
        • 2.Qd5#
        • 2.Qd6#
      • 1...c2!
  • Keys
    • 1.Qg6!
      • threat
        • 2.Qe4#
      • 1...Kxc4
        • 2.Qe4#
      • 1...Sxb4
        • 2.Se6#
      • 1...Sxc5
        • 2.Sf3#
      • 1...c2
        • 2.Qxd3#
      • 1...Se1
        • 2.Se6#
      • 1...Sf4
        • 2.Qf6#
      • 1...Se5
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • S(f);N_GUARD,N_SPINP(j),S_CUTB(h)::QAB(I)
    • S(f);N_SPINS(k),S_CUTB(h)::QAR2(I)
  • Tries
    • Try
      • R(F);CHECK,XP(j)
      • Refutation
        • B(h);P_SPINB(h)
    • Try
      • Q(I);
      • Threat
        • DUALS(2)
      • Vars
        • K(i);N_SPINS(k),P-FLIGHT,P_SPINS(f),XP(E)::QAR2(I)
        • P(g);::QAR1(I)
        • S(f);N_GUARD,N_SPINP(j),S_CUTB(h)::QAB(I)
      • Refutation
        • P(e);
  • Actual
    • Q(I);
    • Threat
      • QAR1(I)
    • Vars
      • K(i);N_SPINS(k),P-FLIGHT,P_SPINS(f),XP(E)::QAR2(I)
      • S(f);XP(D)::S(H)
      • S(f);XP(G)::S(H)
      • P(e);S_CUTB(a)::QAR1(I),XS(f)
      • S(f);::S(H)
      • S(f);N_GUARD,N_SPINP(j),S_CUTB(h)::QAB(I)
      • S(f);N_SPINS(k),S_CUTB(h)::QAR2(I)
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