MESON Chess Problem Database

Problem Display
PID: 33320 (B4b2/2Q5/1p1np3/1p2kP1N/1Np3R1/K2bB2r/8/3R4 w - - 0 1)

Stocchi, Ottavio

1st Prize, Nynorsk Vekeblad TT, 1949

B4b2/2Q5/1p1np3/1p2kP1N/1Np3R1/K2bB2r/8/3R4

#2

9 + 9

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

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf5
      • 2.Rg5#
    • 1...Bxf5
      • 2.Sc6#
  • Tries
    • 1.Sxd3+?
      • 1...Kxf5
        • 2.Rg5#
      • 1...cxd3!
    • 1.Sc6+?
      • 1...Kd5
        • 2.Sf6#
      • 1...Kxf5!
    • 1.Bf4+?
      • 1...Kxf5
        • 2.Rg5#
      • 1...Kd4!
    • 1.Re4+?
      • 1...Kxf5
        • 2.Qh7#
      • 1...Bxe4!
    • 1.Qg7+?
      • 1...Kxf5
        • 2.Rf4#
        • 2.Rg5#
        • 2.Qg5#
      • 1...Bxg7!
  • Keys
    • 1.Qd7!
      • threat
        • 2.Qxe6#
      • 1...Kxf5
        • 2.Rg5#
      • 1...Bxf5
        • 2.Sc6#
      • 1...Sxf5
        • 2.Bf4#
      • 1...exf5
        • 2.Bd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(e);N_SPINS(g),OGATEB,P-FLIGHT,XP(F)::R1(E)
    • B(a);P_PINB(C),SBLOCK,XP(F)::S(D)
  • Tries
    • Try
      • S(D);CHECK,XB(a)
      • Vars
        • K(e);N_SPINS(g),P-FLIGHT,XP(F)::R1(E)
      • Refutation
        • P(c);XS(D)
    • Try
      • S(D);CHECK
      • Vars
        • K(e);N_SPINS(g),P-FLIGHT,P_SPINB(a)::S(G)
      • Refutation
        • K(e);N_SPINS(g),P-FLIGHT,XP(F)
    • Try
      • B(C);CHECK
      • Vars
        • K(e);N_SPINS(g),P-FLIGHT,XP(F)::R1(E)
      • Refutation
        • K(e);N_SPINS(g),P_SPINB(a),S_FLIGHT
    • Try
      • R(E);CHECK
      • Vars
        • K(e);N_SPINS(g),P-FLIGHT,XP(F)::QAB(H)
      • Refutation
        • B(a);P_PINB(C),XR(E)
    • Try
      • Q(H);CHECK,N_PINS(g)
      • Refutation
        • B(i);XQ(H)
  • Actual
    • Q(H);N_PINS(g)
    • Threat
      • QAR1(H),XP(h)
    • Vars
      • K(e);OGATEB,P-FLIGHT,P_SPINP(h),XP(F)::R1(E)
      • B(a);P_PINB(C),SBLOCK,XP(F)::S(D)
      • S(g);P_PINS(D),SBLOCK,XP(F)::B(C)
      • P(h);XP(F)::B(C)
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