MESON Chess Problem Database

Problem Display
PID: 17979 (2bRR3/B2n4/r3p1p1/r3k1P1/1P1pN1BK/2N3Pp/6Q1/5q2 w - - 0 1)

Stocchi, Ottavio

Revista de Sah, 1952

2bRR3/B2n4/r3p1p1/r3k1P1/1P1pN1BK/2N3Pp/6Q1/5q2

#2

11 + 10

5407 Selected Stocchi (II) 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Rxa7
      • 2.Rxe6#
    • 1...Sc5
      • 2.Rd5#
    • 1...Sb6
      • 2.Bb8#
    • 1...Sf6
      • 2.Bxd4#
    • 1...Sb8
      • 2.Bxd4#
    • 1...Sf8
      • 2.Bxd4#
  • Tries
    • 1.Bb8+?
      • 1...Rd6
        • 2.Bxd6#
        • 2.Rxe6#
      • 1...Sxb8!
  • Keys
    • 1.Sd6!
      • threat
        • 2.Rxe6#
      • 1...Kxd6
        • 2.Bb8#
      • 1...Rxd6
        • 2.Qe4#
      • 1...Qc4
        • 2.Sxc4#
        • 2.Sf7#
      • 1...Qf5
        • 2.Sc4#
      • 1...Qf6
        • 2.Sc4#
      • 1...Qf7
        • 2.Sc4#
        • 2.Sxf7#
      • 1...Sc5
        • 2.Qd5#
      • 1...Sb6
        • 2.Qe4#
      • 1...Sf6
        • 2.Sf7#
      • 1...Sb8
        • 2.Qe4#
      • 1...Sf8
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 5
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • R(f);N_GUARD,XB(I)::R1(K),XP(g)
    • S(i);OGATE::R1(J)
    • S(i);N_GUARD,S_CUTR(f)::B(I)
    • S(i);::B(I),XP(c)
  • Tries
    • Try
      • B(I);CHECK
      • Refutation
        • S(i);XB(I)
  • Actual
    • S(E);
    • Threat
      • R1(K),XP(g)
    • Vars
      • K(e);N_SPINP(g),OGATEB,P_SPINS(i),S_FLIGHT,XS(E)::B(I)
      • R(f);SBLOCK,XS(E)::QAR1(A)
      • Q(a);N_GUARD::S(E)
      • Q(a);N_GUARD,P_PINP(H)::S(E)
      • S(i);S_CUTR(d)::QAR1(A)
      • S(i);::QAR1(A)
      • S(i);S_CUTQ(a)::S(E)
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