MESON Chess Problem Database

Problem Display
PID: 34437 (rR1B3K/rP1p2R1/N1k3B1/4Qb2/P2b4/2p1pN1p/n2q4/8 w - - 0 1)

Stocchi, Ottavio

1st HM., Norsk Sjakkblad, 1951

rR1B3K/rP1p2R1/N1k3B1/4Qb2/P2b4/2p1pN1p/n2q4/8

#2

10 + 11

3100 Selected Stocchi (I) 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Qc1
      • 2.Sxd4#
    • 1...Qe1
      • 2.Sxd4#
    • 1...Qb2
      • 2.Sxd4#
    • 1...Qc2
      • 2.Sxd4#
    • 1...Qe2
      • 2.Sxd4#
    • 1...Qf2
      • 2.Sxd4#
    • 1...Qg2
      • 2.Sxd4#
    • 1...Qh2
      • 2.Sxd4#
    • 1...Bc5
      • 2.Qxc5#
    • 1...Bd3
      • 2.Sxd4#
    • 1...Sc1
      • 2.Sb4#
    • 1...Sb4
      • 2.Sxb4#
    • 1...d5
      • 2.Qc7#
    • 1...d6
      • 2.Qb5#
  • Tries
    • 1.bxa8Q+?
      • 1...Rb7
        • 2.Rc8#
        • 2.Qxb7#
      • 1...Rxa8!
    • 1.bxa8B+?
      • 1...Rb7
        • 2.Bxb7#
        • 2.Rc8#
      • 1...Rxa8!
  • Keys
    • 1.Rxd7!
      • threat
        • 2.Rd6#
      • 1...Bxe5+
        • 2.Sxe5#
      • 1...Kxd7
        • 2.Be8#
      • 1...Rxb8
        • 2.Sxb8#
      • 1...Bxd7
        • 2.Be4#
      • 1...Bc5
        • 2.Qc7#
      • 1...Bb6
        • 2.Qb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 13
  • Sets
    • Q(b);N_GUARD::S(A),XB(f)
    • B(f);N_GUARD::QAR1(C),XB(f)
    • B(g);S_CUTQ(b)::S(A),XB(f)
    • S(a);N_GUARD::S(D)
    • S(a);N_GUARD::S(D),XS(a)
    • P(j);SBLOCK::QAR1(C)
    • P(j);SBLOCK::QAB1(C)
  • Tries
    • Try
      • P(F);CHECK,XR(k)
      • Refutation
        • R(i);XQ(F)
    • Try
      • P(F);CHECK,XR(k)
      • Refutation
        • R(i);XB(F)
  • Actual
    • R(G);P_SPINQ(C),XP(j)
    • Threat
      • R1(G)
    • Vars
      • B(f);CHECK,XQ(C)::S(A),XB(f)
      • K(h);OGATEB,S_FLIGHT,XR(G)::B(E)
      • R(k);P_PINB(I),XR(H)::S(D),XR(k)
      • B(g);OGATE,SBLOCK,XR(G)::B(E)
      • B(f);N_PINQ(C)::QAR1(C)
      • B(f);N_PINQ(C)::QAB1(C)
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