MESON Chess Problem Database

Problem Display
PID: 29570 (2NR3K/3p2p1/2Q3rb/2Pnp3/P1k5/Brp5/1qN1P3/8 w - - 0 1)

Stocchi, Ottavio

1st HM., L'Italia Scacchistica, 1946

2NR3K/3p2p1/2Q3rb/2Pnp3/P1k5/Brp5/1qN1P3/8

#2

9 + 10

3100 Selected Stocchi (I) 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Rg1
      • 2.Sd6#
    • 1...Rg2
      • 2.Sd6#
    • 1...Rg3
      • 2.Sd6#
    • 1...Rg4
      • 2.Sd6#
    • 1...Rg5
      • 2.Sd6#
    • 1...Rd6
      • 2.Sxd6#
    • 1...Se3
      • 2.Qe4#
    • 1...Sb4
      • 2.Sb6#
    • 1...Sf4
      • 2.Qe4#
    • 1...Sb6
      • 2.Qe4#
    • 1...Sf6
      • 2.Sd6#
    • 1...Sc7
      • 2.Qe4#
    • 1...Se7
      • 2.Qe4#
    • 1...d6
      • 2.cxd6#
  • Tries
    • 1.Sb6+?
      • 1...Sxb6
        • 2.Qe4#
      • 1...Rxb6!
    • 1.Rxd7?
      • threat
        • 2.Qxd5#
      • 1...Rd6
        • 2.Sxd6#
        • 2.cxd6#
      • 1...Se3
        • 2.Qe4#
      • 1...Sb4
        • 2.Sb6#
        • 2.Qb5#
      • 1...Sf4
        • 2.Se3#
        • 2.Qe4#
      • 1...Sb6
        • 2.Qe4#
      • 1...Sf6
        • 2.Sd6#
      • 1...Sc7
        • 2.Qe4#
      • 1...Se7
        • 2.Qe4#
      • 1...Rxc6!
  • Keys
    • 1.Qxd7!
      • threat
        • 2.Qxd5#
      • 1...Sb4
        • 2.Qb5#
      • 1...Rd6
        • 2.Sxd6#
      • 1...Se3
        • 2.Qd3#
      • 1...Sf4
        • 2.Se3#
      • 1...Sb6
        • 2.Qd3#
      • 1...Sf6
        • 2.Qd3#
      • 1...Sc7
        • 2.Qd3#
      • 1...Se7
        • 2.Qd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 7
    • ADDED MATES = 0
    • REMOVED MATES = 6
  • Sets
    • R(g);N_GUARD::S(G)
    • R(g);N_GUARD::S(G),XR(g)
    • S(e);OGATE::QAR2(F)
    • S(e);N_GUARD,S_CUTR(b)::S(G)
    • S(e);S_CUTR(g)::S(G)
    • P(i);OGATE::QAR(F)+P(E),XP(i)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • S(e);OGATE,XS(G)::QAR2(F)
      • Refutation
        • R(b);XS(G)
    • Try
      • R(H);XP(i)
      • Threat
        • QAB1(F),XS(e)
      • Vars
        • S(e);OGATE::QAR2(F)
        • S(e);S_CUTR(g)::S(G)
      • Refutation
        • R(g);XQ(F)
  • Actual
    • Q(F);XP(i)
    • Threat
      • QAB1(F),XS(e)
    • Vars
      • S(e);S_CUTR(b)::QAB1(F)
      • R(g);N_GUARD::S(G),XR(g)
      • S(e);OGATE::QAB1(F)
      • S(e);N_GUARD,S_CUTB(h)::S(A)
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