MESON Chess Problem Database

Problem Display
PID: 64217 (K2R4/5p2/2Q2NB1/8/2P4p/B1k1P2p/n5nR/2N4b w - - 0 1)

Stocchi, Ottavio

3rd Prize, Norsk Sjakkblad, 1952

K2R4/5p2/2Q2NB1/8/2P4p/B1k1P2p/n5nR/2N4b

#2

10 + 7

5407 Selected Stocchi (II) 2004
56 The Problemist 2008

SOLUTION

  • SOUND
  • Sets
    • 1...Sxe3
      • 2.Rd3#
    • 1...Sf4
      • 2.Rc2#
  • Tries
    • 1.Bb2+?
      • 1...Kb4
        • 2.Qb5#
      • 1...Kxb2!
  • Keys
    • 1.Qe4!
      • threat
        • 2.Qc2#
        • 2.Qd3#
        • 2.Qd4#
      • 1...Sxc1
        • 2.Qc2#
      • 1...Sxe3
        • 2.Rd3#
      • 1...fxg6
        • 2.Qd3#
      • 1...Sb4
        • 2.Qd4#
      • 1...Se1
        • 2.Sd5#
      • 1...Sf4
        • 2.Rc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(c);P_PINQ(F),XP(D)::R1(J)
    • S(c);OGATE,P_PINQ(F)::R1(B)
  • Tries
    • Try
      • B(C);CHECK
      • Vars
        • K(d);S_FLIGHT::QAR1(F)
      • Refutation
        • K(d);P_SPINS(c),S_FLIGHT,XB(C)
  • Actual
    • Q(F);
    • Threat
      • DUALS(3)
    • Vars
      • S(b);XS(A)::QAR1(F)
      • S(c);P_PINQ(F),XP(D)::R1(J)
      • P(g);XB(H)::QAR1(F)
      • S(b);::QAB1(F)
      • S(c);P_PINQ(F)::S(G)
      • S(c);OGATE,P_PINQ(F)::R1(B)
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