MESON Chess Problem Database

Problem Display
PID: 29772 (2KR4/1nQn4/Np1b4/r7/RPNkPP2/2qr1P2/3P4/Bb3B2 w - - 0 1)

Stocchi, Ottavio

4th Prize=, Caissa TT, 1947-1948

2KR4/1nQn4/Np1b4/r7/RPNkPP2/2qr1P2/3P4/Bb3B2

#2

13 + 9

3100 Selected Stocchi (I) 2001
56 The Problemist 2002
5454 Near Snap 2005
102 Probleemblad 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Re3
      • 2.dxe3#
  • Keys
    • 1.Se3!
      • threat
        • 2.Qc4#
      • 1...Rxd2
        • 2.Qxc3#
      • 1...Bxf4
        • 2.bxa5#
      • 1...Bxc7
        • 2.bxa5#
      • 1...Rc5
        • 2.bxc5#
      • 1...Ba2
        • 2.Sc2#
      • 1...Bc5
        • 2.Qe5#
      • 1...Sbc5
        • 2.Qxd6#
      • 1...Sdc5
        • 2.Qg7#
      • 1...Se5
        • 2.Sf5#
      • 1...b5
        • 2.Sf5#

Anticipated by 47455(1929)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 1
  • Sets
    • R(c);OGATE::P(C),XR(c)
  • Actual
    • S(G);P_SPINQ(K)
    • Threat
      • QAR1(K)
    • Vars
      • R(c);N_GUARD,XP(C)::QAB1(K),XQ(b)
      • B(g);N_GUARD,P_SPINS(i),XP(I)::R(E)+P(F),XR(e)
      • B(g);N_GUARD,P_SPINS(i),XQ(K)::R(E)+P(F),XR(e)
      • R(e);OGATE::R(E)+P(F),XR(e)
      • B(a);N_GUARD::S(G)
      • B(g);N_PINQ(K),P_SPINS(i)::QAB1(K)
      • S(h);N_PINQ(K)::QAR2(K),XB(g)
      • S(i);N_PINQ(K),P_SPINB(g)::QAB(K)
      • S(i);P_SPINB(g),S_CUTR(e)::S(G)
      • P(f);S_CUTR(e)::S(G)
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