MESON Chess Problem Database

Problem Display
PID: 138270 (K1b3RB/1pQ1p3/8/b2pN2p/4nk2/R4PNn/5pPP/1B2rr2 w - - 0 1)

Mirri, Giorgio

1st Prize, L'Italia Scacchistica, 1986

K1b3RB/1pQ1p3/8/b2pN2p/4nk2/R4PNn/5pPP/1B2rr2

#2

11 + 12

14744 Nuova Antologia dei Problemisti Italiani 1992
4901 Best Problems 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Re3
      • 2.Sd3#
    • 1...Bf5
      • 2.Sxh5#
    • 1...Shg5
      • 2.Sg6#
    • 1...Sd2
      • 2.Sxh5#
    • 1...Sxg3
      • 2.hxg3#
    • 1...Sc5
      • 2.Sxh5#
    • 1...Seg5
      • 2.Sxh5#
      • 2.Sg6#
    • 1...Sd6
      • 2.Sxh5#
  • Tries
    • 1.Sc4+?
      • 1...Sd6
        • 2.Sxh5#
      • 1...e5
        • 2.Bxe5#
        • 2.Qxe5#
      • 1...Bxc7!
    • 1.Sg4+?
      • 1...Sd6
        • 2.Sxh5#
      • 1...e5
        • 2.Bxe5#
        • 2.Qxe5#
      • 1...Bxc7!
    • 1.Sc6+?
      • 1...Sd6
        • 2.Sxh5#
      • 1...e5
        • 2.Bxe5#
        • 2.Qxe5#
      • 1...Bxc7!
    • 1.Sd7+?
      • 1...Sd6
        • 2.Sxh5#
      • 1...e5
        • 2.Bxe5#
        • 2.Qxe5#
      • 1...Bxc7!
    • 1.Sf7+?
      • 1...Sd6
        • 2.Sxh5#
      • 1...e5
        • 2.Bxe5#
        • 2.Qxe5#
      • 1...Bxc7!
    • 1.Qxe7?
      • threat
        • 2.Sg6#
      • 1...Bf5
        • 2.Sxh5#
      • 1...Sf6
        • 2.Sd3#
      • 1...Bc3!
  • Keys
    • 1.Qc5!
      • threat
        • 2.Sd3#
      • 1...Sxg3
        • 2.hxg3#
      • 1...Sxc5
        • 2.Sxh5#
      • 1...Rd1
        • 2.Qe3#
      • 1...Re3
        • 2.Qxe3#
      • 1...d4
        • 2.Sg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • R(a);SBLOCK::QAB(H)+S(G),DCHECK
    • B(l);SBLOCK::S(F),XP(i)
    • S(d);SBLOCK::QAB(H)+S(G),DCHECK
    • S(e);::S(F),XP(i)
    • S(e);OGATE,XS(F)::P(C),XS(e)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • S(e);P_SPINS(e)::S(F),XP(i)
      • Refutation
        • B(g);XQ(H)
    • Try
      • S(G);CHECK
      • Vars
        • S(e);P_SPINS(e)::S(F),XP(i)
      • Refutation
        • B(g);XQ(H)
    • Try
      • S(G);CHECK
      • Vars
        • S(e);P_SPINS(e)::S(F),XP(i)
      • Refutation
        • B(g);XQ(H)
    • Try
      • S(G);CHECK
      • Vars
        • S(e);P_SPINS(e)::S(F),XP(i)
      • Refutation
        • B(g);XQ(H)
    • Try
      • S(G);CHECK
      • Vars
        • S(e);P_SPINS(e)::S(F),XP(i)
      • Refutation
        • B(g);XQ(H)
    • Try
      • Q(H);XP(k)
      • Threat
        • S(G)
      • Vars
        • B(l);SBLOCK::S(F),XP(i)
        • S(e);::S(G)
      • Refutation
        • B(g);
  • Actual
    • Q(H);
    • Threat
      • S(G)
    • Vars
      • S(e);OGATE,XS(F)::P(C),XS(e)
      • S(e);XQ(H)::S(F),XP(i)
      • R(a);N_GUARD::QAB1(H)
      • R(a);N_GUARD::QAB1(H),XR(a)
      • P(h);::S(G)
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