MESON Chess Problem Database

Problem Display
PID: 29573 (q6B/3rpP2/4PRp1/2P1kNP1/1PB2n2/r1n5/p2P2Q1/K3N3 w - - 0 1)

Stocchi, Ottavio

5th Sp. Prize, James MT (Chess Correspondent), 1947

q6B/3rpP2/4PRp1/2P1kNP1/1PB2n2/r1n5/p2P2Q1/K3N3

#2

13 + 9

3100 Selected Stocchi (I) 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Ra7
      • 2.d4#
    • 1...Rb7
      • 2.d4#
    • 1...Rc7
      • 2.d4#
    • 1...Scd5
      • 2.d4#
    • 1...Sfd5
      • 2.Sd3#
  • Tries
    • 1.Sf3+?
      • 1...Ke4
        • 2.Sg3#
      • 1...Qxf3!
  • Keys
    • 1.Sg3!
      • threat
        • 2.Rf5#
      • 1...Kd4
        • 2.Rxf4#
      • 1...Qxh8
        • 2.Sf3#
      • 1...exf6
        • 2.Bxf6#
      • 1...Qd5
        • 2.Rxg6#
      • 1...Rd5
        • 2.Sf3#
      • 1...Scd5
        • 2.Qe4#
      • 1...Sfd5
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 5
    • REMOVED MATES = 3
  • Sets
    • R(g);N_GUARD::P(C)
    • S(c);S_CUTR(g)::P(C)
    • S(d);N_GUARD,S_CUTR(g)::S(B)
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(e);P-FLIGHT::S(H)
      • Refutation
        • Q(i);XS(B)
  • Actual
    • S(H);
    • Threat
      • B(M)+R(K),DCHECK
    • Vars
      • K(e);S_FLIGHT::B(M)+R(K),DCHECK,XS(d)
      • Q(i);N_GUARD,XB(M)::S(B)
      • P(h);OGATE,P_SPINP(h),XR(K)::B(M),XP(h)
      • Q(i);N_GUARD::B(M)+R(K),XP(f)
      • R(g);S_CUTQ(i)::S(B)
      • S(c);N_GUARD,S_CUTQ(i)::QAR1(D)
      • S(d);S_CUTQ(i)::S(B)
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