MESON Chess Problem Database

Problem Display
PID: 30449 (5r1b/5nQb/2RP2n1/PB2p3/prNk4/PpN2R2/1P6/5K2 w - - 0 1)

Stocchi, Ottavio

2nd Place, Die Schwalbe 090. TT, 1949

5r1b/5nQb/2RP2n1/PB2p3/prNk4/PpN2R2/1P6/5K2

#2

11 + 10

3100 Selected Stocchi (I) 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc4
      • 2.Rxc4#
    • 1...Sf4
      • 2.Qg1#
    • 1...Sh4
      • 2.Qg1#
    • 1...Se7
      • 2.Qg1#
    • 1...Sg5
      • 2.Qa7#
    • 1...Sxd6
      • 2.Qa7#
    • 1...Sh6
      • 2.Qa7#
    • 1...Sd8
      • 2.Qa7#
  • Tries
    • 1.Ke2?
      • threat
        • 2.Rd3#
      • 1...Sh4
        • 2.Qg1#
      • 1...Se7
        • 2.Qg1#
      • 1...Sf4+!
  • Keys
    • 1.Sd2!
      • threat
        • 2.Rd3#
      • 1...Rxb5
        • 2.Rc4#
      • 1...Sxd6
        • 2.Qa7#
      • 1...Rc4
        • 2.Rxc4#
      • 1...Sf4
        • 2.Qg1#
      • 1...Sh4
        • 2.Qg1#
      • 1...Se7
        • 2.Qg1#
      • 1...Sg5
        • 2.Qa7#
      • 1...Sh6
        • 2.Qa7#
      • 1...Sd8
        • 2.Qa7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • R(c);OGATE,XS(F)::R1(I),XR(c)
    • S(f);OGATE::QAB(K)
    • S(g);OGATE,P_PINR(E)::QAB(K)
    • S(g);OGATE,P_PINR(E),XP(J)::QAB(K)
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Threat
        • R1(E)
      • Vars
        • S(f);OGATE::QAB(K)
      • Refutation
        • S(f);CHECK
  • Actual
    • S(F);
    • Threat
      • R1(E)
    • Vars
      • R(c);N_GUARD,XB(H)::R1(I)
      • S(g);OGATE,P_PINR(E),XP(J)::QAB(K)
      • R(c);N_GUARD::R1(I),XR(c)
      • S(f);OGATE::QAB(K)
      • S(g);OGATE,P_PINR(E)::QAB(K)
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