MESON Chess Problem Database

Problem Display
PID: 34431 (8/8/p2pK3/2rp4/1PBkN3/4N1Rp/3PrP1n/5b1Q w - - 0 1)

Stocchi, Ottavio

2nd Prize, Argentine Chess Federation, 1950

8/8/p2pK3/2rp4/1PBkN3/4N1Rp/3PrP1n/5b1Q

#2

9 + 9

264 Magyar Sakkelet 1951
3105 FIDE Album (1945-1955) 1964
3100 Selected Stocchi (I) 2001
133 The Problemist Supplement 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc4
      • 2.Sf5#
    • 1...dxc4
      • 2.Sc2#
  • Keys
    • 1.Sxd6!
      • threat
        • 2.Sf5#
      • 1...Rxe3+
        • 2.fxe3#
      • 1...Rxd2
        • 2.Sef5#
      • 1...Rxf2
        • 2.Sc2#
      • 1...Rxc4
        • 2.Qxd5#
      • 1...dxc4
        • 2.Qe4#
      • 1...Rc6
        • 2.Qxd5#
      • 1...Bg2
        • 2.Qa1#
      • 1...Sf3
        • 2.Rg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • R(f);SBLOCK,XB(G)::S(D)
    • P(g);SBLOCK,XB(G)::S(D)
  • Actual
    • S(H);P_SPINS(D),XP(i)
    • Threat
      • S(H)
    • Vars
      • R(b);CHECK,OGATE,XS(D)::P(C),XR(b)
      • R(b);N_PINS(D),XP(B)::S(D)
      • R(b);N_PINS(D),XP(C)::S(D)
      • R(f);N_GUARD,XB(G)::QAR1(A),XP(g)
      • P(g);N_GUARD,XB(G)::QAR1(A)
      • R(f);N_GUARD::QAR1(A),XP(g)
      • B(a);OGATE::QAB(A)
      • S(c);N_GUARD::R(E)
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