MESON Chess Problem Database

Problem Display
PID: 67560 (1n3n2/2rp3b/3B1N2/bB1P4/1N1k1p2/3p4/1P3P2/3Q1K2 w - - 0 1)

Stocchi, Ottavio

4th Prize, La Scacchiera, 1955-1956

1n3n2/2rp3b/3B1N2/bB1P4/1N1k1p2/3p4/1P3P2/3Q1K2

#2

9 + 9

5407 Selected Stocchi (II) 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Rc2
      • 2.Sxc2#
    • 1...Ra7
      • 2.Sc2#
    • 1...Rb7
      • 2.Sc2#
    • 1...Bg8
      • 2.Qxd3#
    • 1...Sc6
      • 2.Sc2#
    • 1...Sg6
      • 2.Qxd3#
  • Tries
    • 1.Qe1?
      • threat
        • 2.Qe5#
      • 1...Be4
        • 2.Qxe4#
      • 1...Sc6
        • 2.Qc3#
      • 1...Sg6
        • 2.Qe4#
      • 1...Rc1!
  • Keys
    • 1.Sxd3!
      • threat
        • 2.Be5#
      • 1...Bxd3+
        • 2.Qxd3#
      • 1...Sc6
        • 2.Bc5#
      • 1...Sg6
        • 2.Sb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • R(e);N_GUARD::S(E),XR(e)
    • R(e);N_GUARD::S(E)
    • B(g);N_GUARD::QAR1(A),XP(a)
    • S(h);S_CUTR(e)::S(E)
    • S(i);S_CUTB(g)::QAR1(A),XP(a)
  • Tries
    • Try
      • Q(A);N_PINP(a)
      • Threat
        • QAB1(A)
      • Vars
        • B(g);N_GUARD::QAR1(A),XB(g)
        • S(h);S_CUTR(e)::QAB1(A)
        • S(i);S_CUTB(g)::QAR1(A)
      • Refutation
        • R(e);P_PINQ(A)
  • Actual
    • S(E);XP(a)
    • Threat
      • B(H)
    • Vars
      • B(g);CHECK,OGATE,P_SPINB(g),XS(E)::QAR1(A),XB(g)
      • S(h);S_CUTR(e)::B(H)
      • S(i);S_CUTB(g)::QAR(A)+S(E)
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