MESON Chess Problem Database

Problem Display
PID: 18579 (1K2B2Q/B1p1P3/8/3kP1N1/1R1Np3/1P6/8/2r1nr2 w - - 0 1)

Stocchi, Ottavio

2nd Place, Tidskrift for Schack, 1956

1K2B2Q/B1p1P3/8/3kP1N1/1R1Np3/1P6/8/2r1nr2

#2

10 + 6

5407 Selected Stocchi (II) 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Bc6#
    • 1...Rb1
      • 2.Bc6#
    • 1...Rd1
      • 2.Bc6#
    • 1...Rc4
      • 2.bxc4#
    • 1...Rc6
      • 2.Bxc6#
    • 1...Rg1
      • 2.Bf7#
    • 1...Rh1
      • 2.Bf7#
    • 1...Rf7
      • 2.Bxf7#
    • 1...Sc2
      • 2.Bc6#
    • 1...Sf3
      • 2.Bf7#
    • 1...c5
      • 2.Bc6#
  • Tries
    • 1.Sdf3?
      • threat
        • 2.Rd4#
        • 2.Qg8#
      • 1...Rxf3
        • 2.Rd4#
      • 1...exf3
        • 2.Rd4#
      • 1...Rd1
        • 2.Qg8#
      • 1...Rc4
        • 2.Qg8#
        • 2.bxc4#
      • 1...Rc6
        • 2.Rd4#
      • 1...Sc2
        • 2.Qg8#
      • 1...c5
        • 2.Qg8#
      • 1...Sxf3!
    • 1.Sf5?
      • threat
        • 2.Se3#
        • 2.Rd4#
      • 1...Rxf5
        • 2.Rd4#
      • 1...Rd1
        • 2.Se3#
      • 1...Rc3
        • 2.Rd4#
      • 1...Rc4
        • 2.Se3#
        • 2.bxc4#
      • 1...Rf3
        • 2.Rd4#
      • 1...Sg2
        • 2.Rd4#
      • 1...Sf3
        • 2.Se3#
      • 1...e3
        • 2.Sxe3#
        • 2.Rd4#
      • 1...c5
        • 2.Se3#
      • 1...Sc2!
    • 1.Sde6?
      • threat
        • 2.Rd4#
      • 1...Rd1
        • 2.Sxc7#
      • 1...Rc4
        • 2.bxc4#
      • 1...Sc2
        • 2.Sxc7#
      • 1...Sf3
        • 2.Sf4#
      • 1...c5
        • 2.Sc7#
      • 1...Rf6!
    • 1.Qf6?
      • threat
        • 2.Bf7#
        • 2.Qe6#
      • 1...Rc6
        • 2.Bxc6#
      • 1...Rxf6!
  • Keys
    • 1.Sc6!
      • threat
        • 2.Rd4#
      • 1...Rd1
        • 2.Rb5#
      • 1...Rc4
        • 2.bxc4#
      • 1...Sc2
        • 2.Rb5#
      • 1...Sf3
        • 2.Qg8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 0
    • REMOVED MATES = 7
  • Sets
    • R(a);N_GUARD::B(I)
    • R(a);OGATE::P(A),XR(a)
    • R(a);N_GUARD::B(I),XR(a)
    • R(c);N_GUARD::B(I)
    • R(c);N_GUARD::B(I),XR(c)
    • S(b);S_CUTR(a)::B(I)
    • S(b);S_CUTR(c)::B(I)
    • P(f);S_CUTR(a)::B(I)
  • Tries
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Vars
        • R(c);XS(C)::R1(B)
        • P(d);XS(C)::R1(B)
        • R(a);::QAB(J)
        • R(a);::R1(B)
        • S(b);::QAB(J)
        • P(f);::QAB(J)
      • Refutation
        • S(b);XS(C)
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Vars
        • R(c);XS(C)::R1(B)
        • R(a);::S(C)
        • R(a);::R1(B)
        • R(c);::R1(B)
        • S(b);::R1(B)
        • S(b);::S(C)
        • P(f);::S(C)
      • Refutation
        • S(b);
    • Try
      • S(C);
      • Threat
        • R1(B)
      • Vars
        • R(a);N_GUARD::S(C),XP(f)
        • R(a);OGATE::P(A),XR(a)
        • S(b);S_CUTR(a)::S(C),XP(f)
        • S(b);S_CUTR(c)::S(C)
        • P(f);S_CUTR(a)::S(C)
      • Refutation
        • R(c);
    • Try
      • Q(J);
      • Threat
        • DUALS(2)
      • Vars
        • R(a);N_GUARD::B(I),XR(a)
      • Refutation
        • R(c);XQ(J)
  • Actual
    • S(C);
    • Threat
      • R1(B)
    • Vars
      • R(a);N_GUARD::R(B)
      • R(a);OGATE::P(A),XR(a)
      • S(b);S_CUTR(a)::R(B)
      • S(b);S_CUTR(c)::QAB(J)
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