MESON Chess Problem Database

Problem Display
PID: 255929 (3r4/N2n1Q2/4p3/1BpkP1R1/4p3/4P3/5NK1/8 w - - 0 1)

Suvorov, Ivan

Zadachi i Etyudi, 2007

3r4/N2n1Q2/4p3/1BpkP1R1/4p3/4P3/5NK1/8

#2

8 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Ra8
      • 2.Qxd7#
    • 1...Rb8
      • 2.Qxd7#
    • 1...Rc8
      • 2.Qxd7#
    • 1...Re8
      • 2.Qxd7#
    • 1...Rf8
      • 2.Qxd7#
    • 1...Rg8
      • 2.Qxd7#
    • 1...Rh8
      • 2.Qxd7#
    • 1...Sb6
      • 2.Qb7#
    • 1...Sf6
      • 2.Qb7#
    • 1...Sf8
      • 2.Qb7#
  • Tries
    • 1.Sd3?
      • threat
        • 2.Sf4#
      • 1...exd3
        • 2.Qf3#
      • 1...c4
        • 2.Bc6#
      • 1...Sxe5!
    • 1.Sc8?
      • threat
        • 2.Se7#
      • 1...Rxc8
        • 2.Qxd7#
      • 1...Sxe5
        • 2.Qb7#
      • 1...Re8
        • 2.Qxd7#
      • 1...c4!
    • 1.Qe7?
      • threat
        • 2.Qd6#
      • 1...Sxe5
        • 2.Qxd8#
      • 1...Sb6
        • 2.Qb7#
      • 1...Sf6
        • 2.Qb7#
      • 1...Sf8
        • 2.Qb7#
      • 1...Sb8!
  • Keys
    • 1.Sxe4!
      • threat
        • 2.Sc3#
      • 1...Kxe4
        • 2.Qf3#
      • 1...Sxe5
        • 2.Qb7#
      • 1...c4
        • 2.Bc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 10
  • Sets
    • R(f);N_GUARD::QAR2(H),XS(e)
    • R(f);N_GUARD,P_PINR(F)::QAR2(H),XS(e)
    • S(e);OGATE::QAB(H)
  • Tries
    • Try
      • S(A);
      • Threat
        • S(A)
      • Vars
        • P(a);OGATEB,XS(A)::QAB(H)
        • P(b);SBLOCK::B(D)
      • Refutation
        • S(e);P_SPINS(e),XP(E)
    • Try
      • S(G);
      • Threat
        • S(G)
      • Vars
        • R(f);N_GUARD,XS(G)::QAR2(H),XS(e)
        • S(e);OGATE,P_SPINS(e),XP(E)::QAB(H)
        • R(f);N_GUARD::QAR2(H),XS(e)
      • Refutation
        • P(b);
    • Try
      • Q(H);N_PINP(d)
      • Threat
        • QAR1(H)
      • Vars
        • S(e);OGATEB,P_SPINS(e),XP(E)::QAR(H),XR(f)
        • S(e);OGATE::QAB(H)
      • Refutation
        • S(e);
  • Actual
    • S(A);XP(a)
    • Threat
      • S(A)
    • Vars
      • K(c);N_SPINP(d),OGATEB,S_FLIGHT,XS(A)::QAB1(H)
      • S(e);OGATE,P_SPINS(e),XP(E)::QAB(H)
      • P(b);SBLOCK::B(D)
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