MESON Chess Problem Database

Problem Display
PID: 67430 (1K4b1/B7/1R1p4/1N1Pb3/1PkP4/1R6/PPn5/7Q w - - 0 1)

Stocchi, Ottavio

8th Prize, Argentine Chess Federation, 1955

1K4b1/B7/1R1p4/1N1Pb3/1PkP4/1R6/PPn5/7Q

#2

11 + 5

5407 Selected Stocchi (II) 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd4
      • 2.Sxd6#
    • 1...Bxd5
      • 2.Qf1#
    • 1...Sxb4
      • 2.Rc3#
    • 1...Sxd4
      • 2.Sa3#
  • Tries
    • 1.Sa3+?
      • 1...Kxd4
        • 2.Rb5#
        • 2.Ra6#
        • 2.Rc6#
        • 2.Rxd6#
        • 2.Rb7#
      • 1...Sxa3!
    • 1.Sxd6+?
      • 1...Kxd4
        • 2.Rb5#
        • 2.Ra6#
        • 2.Rc6#
        • 2.Rb7#
        • 2.Qe4#
        • 2.Qd1#
      • 1...Bxd6+!
  • Keys
    • 1.Sc7!
      • threat
        • 2.Rc6#
      • 1...Kxd4
        • 2.Rc6#
      • 1...Bxd4
        • 2.Qf1#
      • 1...Bxd5
        • 2.Qxd5#
      • 1...Sxb4
        • 2.R6xb4#
      • 1...Sxd4
        • 2.Rc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 4
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • B(c);N_GUARD,SBLOCK,XP(F)::S(G),XP(d)
    • B(e);SBLOCK,XP(H)::QAB(A)
    • S(a);SBLOCK,XP(E)::R1(D)
    • S(a);N_GUARD,SBLOCK,XP(F)::S(G)
  • Tries
    • Try
      • S(G);CHECK
      • Refutation
        • S(a);XS(G)
    • Try
      • S(G);CHECK,P_SPINS(G),XP(d)
      • Refutation
        • B(c);CHECK,XS(G)
  • Actual
    • S(G);
    • Threat
      • R(I)
    • Vars
      • K(b);P-FLIGHT,XP(F)::B(J)+R(I)
      • B(c);SBLOCK,XP(F)::QAB(A)
      • B(e);OGATE,XP(H)::QAB1(A),XB(e)
      • S(a);OGATE,XP(E)::R1(I),XS(a)
      • S(a);SBLOCK,XP(F)::R1(D)
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