MESON Chess Problem Database

Problem Display
PID: 67473 (3RK3/brpNB2p/N1p3n1/3pR2r/3k2P1/1P1p4/3QnP2/3b3B w - - 0 1)

Stocchi, Ottavio

6th Prize, Die Schwalbe, 1955

3RK3/brpNB2p/N1p3n1/3pR2r/3k2P1/1P1p4/3QnP2/3b3B

#2

11 + 12

5407 Selected Stocchi (II) 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Rb4
      • 2.Qxb4#
    • 1...Rb6
      • 2.Bc5#
    • 1...Bc5
      • 2.Bxc5#
    • 1...Bb6
      • 2.Qb4#
    • 1...Bb8
      • 2.Bc5#
    • 1...Sc1
      • 2.Qb2#
    • 1...Sg1
      • 2.Qb2#
    • 1...Sc3
      • 2.Qe3#
    • 1...Sg3
      • 2.Qb2#
    • 1...Sef4
      • 2.Qb2#
  • Tries
    • 1.Sb4?
      • threat
        • 2.Sxc6#
        • 2.Qxd3#
      • 1...Rxb4
        • 2.Qxb4#
      • 1...Bxb3
        • 2.Qxd3#
      • 1...Sxe7
        • 2.Qxd3#
      • 1...Rh3
        • 2.Sxc6#
      • 1...Rb6
        • 2.Bc5#
        • 2.Qxd3#
      • 1...Bc2
        • 2.Sxc2#
        • 2.Sxc6#
      • 1...Sc1
        • 2.Sxc6#
        • 2.Qb2#
      • 1...Sef4
        • 2.Sxc6#
        • 2.Qb2#
      • 1...Sgf4
        • 2.Sxc6#
      • 1...c5
        • 2.Sc6#
        • 2.Qxd3#
      • 1...Sxe5!
    • 1.Sb6?
      • threat
        • 2.Re4#
      • 1...Kxe5
        • 2.Qe3#
      • 1...Rxe5
        • 2.Qb4#
      • 1...Sxe5
        • 2.Bc5#
      • 1...Sc3
        • 2.Qe3#
      • 1...Sg3
        • 2.Qb2#
      • 1...Rxh1!
  • Keys
    • 1.Sdc5!
      • threat
        • 2.Re4#
      • 1...Kxe5
        • 2.Qe3#
      • 1...Rxe5
        • 2.Qxd3#
      • 1...Sxe5
        • 2.Se6#
      • 1...Sc3
        • 2.Qe3#
      • 1...Sg3
        • 2.Qb2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 8
  • Sets
    • R(j);N_GUARD::QAR2(B),XR(j)
    • R(j);S_CUTB(i)::B(I)
    • B(i);N_GUARD::B(I),XB(i)
    • B(i);S_CUTR(j)::QAR2(B)
    • B(i);N_GUARD::B(I)
    • S(b);N_GUARD::QAB(B)
    • S(b);SBLOCK::QAB1(B)
  • Tries
    • Try
      • S(G);
      • Threat
        • DUALS(2)
      • Vars
        • R(j);OGATE,XS(G)::QAR2(B),XR(j)
        • B(a);XP(D)::QAR1(B),XP(c)
        • S(h);XB(I)::QAR1(B),XP(c)
        • R(f);::S(G),XP(g)
        • S(h);::S(G),XP(g)
      • Refutation
        • S(h);XR(F)
    • Try
      • S(H);
      • Threat
        • R1(F)
      • Vars
        • K(d);N_SPINP(c),S_FLIGHT,XR(F)::QAR2(B)
        • R(f);P_PINB(I),SBLOCK,XR(F)::QAR2(B)
        • S(h);SBLOCK,XR(F)::B(I)
        • S(b);SBLOCK::QAB1(B)
        • S(b);N_GUARD::QAB(B)
      • Refutation
        • R(f);XB(A)
  • Actual
    • S(H);
    • Threat
      • R1(F)
    • Vars
      • K(d);N_SPINP(c),S_FLIGHT,XR(F)::QAR2(B)
      • R(f);P_PINB(I),SBLOCK,XR(F)::QAR1(B),XP(c)
      • S(h);SBLOCK,XR(F)::S(H)
      • S(b);SBLOCK::QAB1(B)
      • S(b);N_GUARD::QAB(B)
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