MESON Chess Problem Database

Problem Display
PID: 197692 (4B3/2Nb3K/1p6/1PkNPn2/r2R3p/3P4/3P4/B1n1qQ2 w - - 0 1)

Suvorov, Ivan

Zadachi i Etyudi, 1997

4B3/2Nb3K/1p6/1PkNPn2/r2R3p/3P4/3P4/B1n1qQ2

#2

11 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rxa1
      • 2.Rc4#
    • 1...Ra2
      • 2.Rc4#
    • 1...Ra3
      • 2.Rc4#
    • 1...Rc4
      • 2.Rxc4#
    • 1...Ra5
      • 2.Rc4#
    • 1...Ra6
      • 2.Rc4#
    • 1...Ra7
      • 2.Rc4#
    • 1...Ra8
      • 2.Rc4#
    • 1...Bxb5
      • 2.Se6#
    • 1...Be6
      • 2.Sxe6#
    • 1...Se3
      • 2.Qf8#
    • 1...Sg3
      • 2.Qf8#
    • 1...Sxd4
      • 2.Qf8#
    • 1...Sh6
      • 2.Qf8#
    • 1...Sg7
      • 2.Qf8#
  • Tries
    • 1.Sb4?
      • threat
        • 2.Rc4#
      • 1...Qxe5
        • 2.Qxc1#
      • 1...Rxb4
        • 2.Rd5#
      • 1...Bxb5
        • 2.Se6#
      • 1...Sxd3
        • 2.Sxd3#
      • 1...Sxd4
        • 2.Qf8#
      • 1...Qe4
        • 2.Qxc1#
      • 1...Be6
        • 2.Sxe6#
      • 1...Se3
        • 2.Qf8#
      • 1...Sd6!
  • Keys
    • 1.Sc3!
      • threat
        • 2.Sxa4#
      • 1...Kxd4
        • 2.Sxa4#
      • 1...Rxa1
        • 2.Rc4#
      • 1...Rxd4
        • 2.Sa6#
      • 1...Bxb5
        • 2.Se6#
      • 1...Sxd4
        • 2.Qf8#
      • 1...Rc4
        • 2.Rxc4#
      • 1...Qd1
        • 2.Se4#
      • 1...Ra2
        • 2.Rc4#
      • 1...Ra3
        • 2.Rc4#
      • 1...Rb4
        • 2.Rd5#
      • 1...Ra5
        • 2.Rc4#
      • 1...Ra6
        • 2.Rc4#
      • 1...Ra7
        • 2.Rc4#
      • 1...Ra8
        • 2.Rc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • R(c);N_GUARD,XB(A)::R1(E)
    • R(c);N_GUARD::R1(E)
    • R(c);N_GUARD::R1(E),XR(c)
    • B(h);N_GUARD,XP(F)::S(I)
    • B(h);N_GUARD::S(I),XB(h)
    • S(f);OGATE::QAB(B)
    • S(f);OGATE,XR(E)::QAB(B)
  • Tries
    • Try
      • S(G);
      • Threat
        • R1(E)
      • Vars
        • Q(b);OGATE,XP(H)::QAR(B),XS(a)
        • R(c);SBLOCK,XS(G)::R1(E)
        • B(h);N_GUARD,XP(F)::S(I)
        • S(a);XP(D)::S(G),XS(a)
        • S(f);OGATE,XR(E)::QAB(B)
        • Q(b);OGATE::QAR(B),XS(a)
        • B(h);N_GUARD::S(I),XB(h)
        • S(f);OGATE::QAB(B)
      • Refutation
        • S(f);
  • Actual
    • S(G);
    • Threat
      • S(G),XR(c)
    • Vars
      • K(e);S_FLIGHT,XR(E)::B(A)+S(G),XR(c)
      • R(c);N_GUARD,XB(A)::R1(E)
      • R(c);N_GUARD,SBLOCK,XR(E)::S(I)
      • B(h);N_GUARD,XP(F)::S(I)
      • S(f);OGATE,SBLOCK,XR(E)::QAB(B)
      • R(c);N_GUARD::R1(E),XR(c)
      • Q(b);N_GUARD::S(G)
      • R(c);N_GUARD::R1(E)
      • R(c);SBLOCK::R1(E)
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