MESON Chess Problem Database

Problem Display
PID: 11398 (1bq3B1/2rnN3/b4p2/prRN4/3k4/Knpp1PQ1/1BPR2p1/8 w - - 0 1)

Stocchi, Ottavio

5th Prize, L'Italia Scacchistica, 1938

1bq3B1/2rnN3/b4p2/prRN4/3k4/Knpp1PQ1/1BPR2p1/8

#2

10 + 13

3100 Selected Stocchi (I) 2001
14475 Mat Plus Review 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Rbxc5
      • 2.Qf4#
    • 1...Se5
      • 2.Qf2#
  • Tries
    • 1.Qh4+?
      • 1...Ke5
        • 2.Qf4#
      • 1...Kxc5!
    • 1.Qg4+?
      • 1...Ke5
        • 2.Qf4#
      • 1...Kxc5!
  • Keys
    • 1.Sxc3!
      • threat
        • 2.Qf2#
      • 1...Ke3
        • 2.Rxd3#
      • 1...Kxc5
        • 2.Sa4#
      • 1...Rbxc5
        • 2.Qf4#
      • 1...Rcxc5
        • 2.Rxd3#
      • 1...Sbxc5
        • 2.Sf5#
      • 1...Sdxc5
        • 2.Sd1#
      • 1...g1Q
        • 2.Qxg1#
      • 1...g1B
        • 2.Qxg1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 1
  • Sets
    • R(g);SBLOCK,XR(G)::QAR2(F)
    • S(k);SBLOCK::QAB(F)
  • Tries
    • Try
      • Q(F);CHECK
      • Vars
        • K(e);S_FLIGHT::QAB1(F)
      • Refutation
        • K(e);N_SPINP(c),S_FLIGHT,XR(G)
    • Try
      • Q(F);CHECK
      • Vars
        • K(e);S_FLIGHT::QAB1(F)
      • Refutation
        • K(e);N_SPINP(c),S_FLIGHT,XR(G)
  • Actual
    • S(H);P_PINP(d),XP(c)
    • Threat
      • QAB(F)
    • Vars
      • K(e);N_SPINP(d),S_FLIGHT::R1(C),XP(d)
      • K(e);N_SPINP(d),S_FLIGHT,XR(G)::S(H)
      • R(g);SBLOCK,XR(G)::QAR2(F)
      • R(j);SBLOCK,XR(G)::R1(C),XP(d)
      • S(b);SBLOCK,XR(G)::S(I)
      • S(k);SBLOCK,XR(G)::B(A)+S(H)
      • P(a);OGATE::QAB(F),XQ(a)
      • P(a);OGATE::QAB(F),XB(a)
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