MESON Chess Problem Database

Problem Display
PID: 60442 (B7/1Np5/3p1R1B/2p1P2Q/2pkp1pN/R2P2K1/2P5/8 w - - 0 1)

Chebanov, Nikolai V

Probleemblad, 2005

B7/1Np5/3p1R1B/2p1P2Q/2pkp1pN/R2P2K1/2P5/8

#2

11 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...c6
      • 2.Rxd6#
  • Tries
    • 1.Sxd6?
      • threat
        • 2.Sb5#
      • 1...cxd3
        • 2.c3#
      • 1...cxd6
        • 2.Rxd6#
      • 1...c6!
    • 1.Sd8?
      • threat
        • 2.Se6#
      • 1...c6
        • 2.Rxd6#
      • 1...cxd3!
    • 1.exd6?
      • threat
        • 2.Qxc5#
      • 1...cxd6
        • 2.Rxd6#
      • 1...exd3!
  • Keys
    • 1.Sa5!
      • 1...cxd3
        • 2.c3#
      • 1...exd3
        • 2.c3#
      • 1...dxe5
        • 2.Sf5#
      • 1...c6
        • 2.Rxd6#
      • 1...c3
        • 2.Sb3#
      • 1...e3
        • 2.Rf4#
      • 1...d5
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • P(g);N_GUARD::R(H),XP(f)
  • Tries
    • Try
      • S(J);XP(f)
      • Threat
        • S(J)
      • Vars
        • P(a);SBLOCK,XP(C)::P(A)
        • P(g);OGATE,XS(J)::R(H),XP(g)
      • Refutation
        • P(g);
    • Try
      • S(J);
      • Threat
        • S(J)
      • Vars
        • P(g);N_GUARD::R(H),XP(f)
      • Refutation
        • P(a);XP(C)
    • Try
      • P(F);XP(f)
      • Threat
        • QAB1(G),XP(e)
      • Vars
        • P(g);OGATE,XP(F)::R(H),XP(g)
      • Refutation
        • P(c);XP(C)
  • Actual
    • S(J);
    • Vars
      • P(a);SBLOCK,XP(C)::P(A)
      • P(c);SBLOCK,XP(C)::P(A)
      • P(f);SBLOCK,XP(F)::S(E)
      • P(g);N_GUARD::R(H),XP(f)
      • P(a);N_GUARD,SBLOCK::S(J)
      • P(c);OGATEB,SBLOCK::R(H)
      • P(f);SBLOCK::S(J)
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