MESON Chess Problem Database

Problem Display
PID: 105415 (BQ5B/6Nn/3b4/2pPnp2/2Ppkp2/7R/2PPN1P1/K7 w - - 0 1)

Erokhin, Vladimir Alekseevich

Sachove umeni (Ceskoslovensky sach), 1973

BQ5B/6Nn/3b4/2pPnp2/2Ppkp2/7R/2PPN1P1/K7

#2

12 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qe8?
      • threat
        • 2.d3#
      • 1...d3
        • 2.cxd3#
      • 1...f3
        • 2.gxf3#
      • 1...Be7!
  • Keys
    • 1.Se6!
      • 1...Bxb8
        • 2.Sxc5#
      • 1...Sxc4
        • 2.d3#
      • 1...Bc7
        • 2.Sxc5#
      • 1...Be7
        • 2.Qxe5#
      • 1...Bf8
        • 2.Qxe5#
      • 1...Sd3
        • 2.cxd3#
      • 1...Sf3
        • 2.gxf3#
      • 1...Sg4
        • 2.d3#
      • 1...Sc6
        • 2.d3#
      • 1...Sg6
        • 2.d3#
      • 1...Sd7
        • 2.d3#
      • 1...Sf7
        • 2.d3#
      • 1...Sg5
        • 2.Sxg5#
      • 1...Sf6
        • 2.Sg5#
      • 1...Sf8
        • 2.Sg5#
      • 1...d3
        • 2.Sc3#
      • 1...f3
        • 2.Sg3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 17
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(K);P_PINS(e)
      • Threat
        • P(C)
      • Vars
        • P(a);OGATE::P(B),XP(a)
        • P(c);OGATE::P(E),XP(c)
      • Refutation
        • B(g);N_SPINS(e)
  • Actual
    • S(I);
    • Vars
      • B(g);N_GUARD,XQ(K)::S(I),XP(d)
      • S(e);N_GUARD,XP(G)::P(C)
      • B(g);N_GUARD::S(I),XP(d)
      • B(g);OGATE::QAR1(K),XS(e)
      • S(e);OGATE::P(B),XS(e)
      • S(e);OGATE::P(E),XS(e)
      • S(e);N_GUARD::P(C)
      • S(h);N_GUARD::S(I),XS(h)
      • S(h);N_GUARD::S(I)
      • P(a);N_GUARD::S(D)
      • P(c);N_GUARD::S(D)
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