MESON Chess Problem Database

Problem Display
PID: 33562 (3R4/1qp2b2/1p1N1pr1/1P1kPPp1/3p2K1/1nP3Q1/B7/8 w - - 0 1)

Stocchi, Ottavio

2nd Prize, Problemisten, 1949/II

3R4/1qp2b2/1p1N1pr1/1P1kPPp1/3p2K1/1nP3Q1/B7/8

#2

9 + 10

3100 Selected Stocchi (I) 2001
14475 Mat Plus Review 2007

SOLUTION

  • SOUND
  • Sets
    • 1...c5
      • 2.c4#
  • Tries
    • 1.Qg2+?
      • 1...Kxe5
        • 2.Sxf7#
      • 1...Kc5!
    • 1.Qf3+?
      • 1...Kxe5
        • 2.Sxf7#
      • 1...Kc5!
  • Keys
    • 1.Qd3!
      • threat
        • 2.Qxd4#
      • 1...Kc5
        • 2.Sxb7#
      • 1...Kxe5
        • 2.Sxf7#
      • 1...fxe5
        • 2.Qc4#
      • 1...c5
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(i);SBLOCK::P(B)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(c);N_SPINS(a),P-FLIGHT,XP(F)::S(H),XB(j)
      • Refutation
        • K(c);N_SPINS(a),P-FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(c);N_SPINS(a),P-FLIGHT,XP(F)::S(H),XB(j)
      • Refutation
        • K(c);N_SPINS(a),P-FLIGHT
  • Actual
    • Q(C);P_PINP(b)
    • Threat
      • QAR1(C),XP(b)
    • Vars
      • K(c);N_SPINP(b),N_SPINS(a),P-FLIGHT::S(H),XQ(h)
      • K(c);N_SPINP(b),N_SPINS(a),P-FLIGHT,XP(F)::S(H),XB(j)
      • P(f);SBLOCK,XP(F)::QAB1(C)
      • P(i);SBLOCK::QAB1(C)
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Developed and maintained by Brian Stephenson.
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