MESON Chess Problem Database

Problem Display
PID: 67467 (8/2p2NPp/1b2B2q/2B4p/1r2pk2/6N1/2n1QpPK/5b1n w - - 0 1)

Stocchi, Ottavio

7th Prize, Argentine Chess Federation, 1955

8/2p2NPp/1b2B2q/2B4p/1r2pk2/6N1/2n1QpPK/5b1n

#2

8 + 12

5407 Selected Stocchi (II) 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Qxg7
      • 2.Sxh5#
    • 1...Qf6
      • 2.Sxh5#
    • 1...Rb1
      • 2.Qxe4#
    • 1...Rb2
      • 2.Qxe4#
    • 1...Rb3
      • 2.Qxe4#
    • 1...Rb5
      • 2.Qxe4#
    • 1...Bxe2
      • 2.Sxe2#
    • 1...Sxg3
      • 2.Qxf2#
    • 1...Sa1
      • 2.Qe3#
    • 1...Se1
      • 2.Qe3#
    • 1...Sa3
      • 2.Qe3#
    • 1...Se3
      • 2.Qxe3#
    • 1...Sd4
      • 2.Qxe4#
    • 1...e3
      • 2.Qf3#
    • 1...h4
      • 2.Qg4#
    • 1...c6
      • 2.Bd6#
  • Tries
    • 1.Qd2+?
      • 1...Se3
        • 2.Qxe3#
      • 1...e3!
  • Keys
    • 1.Qxh5!
      • threat
        • 2.Qxh6#
      • 1...Qxh5+
        • 2.Sxh5#
      • 1...Qxg7
        • 2.Qf5#
      • 1...Qxe6
        • 2.Qg5#
      • 1...Bxg2
        • 2.Se2#
      • 1...Qg5
        • 2.Qxg5#
      • 1...Qf6
        • 2.Qg4#
      • 1...Qg6
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 5
    • REMOVED MATES = 14
  • Sets
    • Q(j);N_GUARD,XP(H)::S(D),XP(h)
    • Q(j);N_GUARD::S(D),XP(h)
    • R(e);N_GUARD::QAR1(A),XP(f)
    • B(a);XQ(A)::S(D),XB(a)
    • S(b);N_GUARD,XS(D)::QAR2(A),XP(d)
    • S(c);N_GUARD::QAB1(A)
    • S(c);N_GUARD::QAB1(A),XS(c)
    • S(c);S_CUTR(e)::QAR1(A),XP(f)
    • P(f);N_GUARD::QAR1(A)
    • P(h);N_GUARD::QAR1(A)
    • P(k);N_GUARD::B(E)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • S(c);N_GUARD,P_SPINS(c)::QAB1(A),XS(c)
      • Refutation
        • P(f);P_SPINP(f)
  • Actual
    • Q(A);P_SPINQ(A),XP(h)
    • Threat
      • QAB(A),XQ(j)
    • Vars
      • Q(j);CHECK,XQ(A)::S(D),XQ(j)
      • Q(j);N_PINQ(A),XP(H)::QAR1(A)
      • Q(j);N_PINQ(A),XB(F)::QAB1(A)
      • B(a);N_GUARD,XP(B)::S(D)
      • Q(j);N_PINQ(A)::QAB1(A),XQ(j)
      • Q(j);N_PINQ(A)::QAR1(A)
      • Q(j);N_PINQ(A)::QAB1(A)
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