MESON Chess Problem Database

Problem Display
PID: 67087 (B2n4/1np1Q3/6p1/pqP1p3/1pPkPp2/p1R5/rb2PK2/NN2B3 w - - 0 1)

Stocchi, Ottavio

1st Prize, Problem (Zagreb), 1954

B2n4/1np1Q3/6p1/pqP1p3/1pPkPp2/p1R5/rb2PK2/NN2B3

#2

11 + 13

5407 Selected Stocchi (II) 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Sxc5
      • 2.Sc2#
    • 1...Sd6
      • 2.Sb3#
  • Tries
    • 1.Rd3+?
      • 1...Kxc4
        • 2.Sd2#
      • 1...Kxe4!
    • 1.Qd6+?
      • 1...Kxe4
        • 2.Qd3#
      • 1...Sxd6
        • 2.Sb3#
      • 1...cxd6!
  • Keys
    • 1.Sd2!
      • threat
        • 2.Rd3#
      • 1...Kxc3
        • 2.Qxe5#
      • 1...Qxc4
        • 2.Rxc4#
      • 1...Bxc3
        • 2.Sab3#
      • 1...Sxc5
        • 2.Sf3#
      • 1...bxc3
        • 2.Sc2#
      • 1...Sd6
        • 2.Sdb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(k);XP(I)::S(A)
    • S(k);::S(A)
  • Tries
    • Try
      • R(F);CHECK
      • Vars
        • K(e);P-FLIGHT,XP(G)::S(B)
      • Refutation
        • K(e);P-FLIGHT,P_SPINP(i),P_SPINS(k),XP(H)
    • Try
      • Q(J);CHECK
      • Vars
        • K(e);OGATE,P-FLIGHT,P_SPINS(k),XP(H)::QAB1(J)
        • S(k);XQ(J)::S(A)
      • Refutation
        • P(l);XQ(J)
  • Actual
    • S(B);
    • Threat
      • R1(F)
    • Vars
      • K(e);S_FLIGHT,XR(F)::QAB(J),XP(i)
      • Q(h);OGATE,XP(G)::R1(F),XQ(h)
      • B(b);SBLOCK,XR(F)::S(A)
      • S(k);XP(I)::S(B)
      • P(d);SBLOCK,XR(F)::S(A)
      • S(k);::S(B)
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