MESON Chess Problem Database

Problem Display
PID: 122393 (3b4/8/2Bpp3/R2n2PN/3Nk3/K7/3R1PpB/8 w - - 0 1)

Sementsov, Mikola Petrovich

Intelectualie Egri, 1993

3b4/8/2Bpp3/R2n2PN/3Nk3/K7/3R1PpB/8

#2

9 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bxa5
      • 2.Sf6#
    • 1...Bb6
      • 2.Sf6#
    • 1...Bf6
      • 2.Sxf6#
    • 1...Bc7
      • 2.Sf6#
    • 1...e5
      • 2.Bxd5#
  • Tries
    • 1.Ba4?
      • threat
        • 2.Bc2#
      • 1...Se3
        • 2.f3#
      • 1...Sf4
        • 2.Sg3#
      • 1...Sb4!
    • 1.Rxd5?
      • threat
        • 2.Re5#
        • 2.Rxd6#
      • 1...e5
        • 2.Rxe5#
        • 2.Rxd6#
      • 1...exd5!
  • Keys
    • 1.Be8!
      • threat
        • 2.Bg6#
      • 1...Se3
        • 2.f3#
      • 1...Sf4
        • 2.Sg3#
      • 1...Se7
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • B(f);N_GUARD,XR(F)::S(H)
    • B(f);N_GUARD::S(H)
    • B(f);N_GUARD::S(H),XB(f)
    • P(e);N_GUARD::B(I),XS(c)
  • Tries
    • Try
      • B(I);N_PINS(c)
      • Threat
        • B(I)
      • Vars
        • S(c);SBLOCK::P(B)
        • S(c);SBLOCK::S(H)
      • Refutation
        • S(c);
    • Try
      • R(F);XS(c)
      • Threat
        • DUALS(2)
      • Refutation
        • P(e);P_SPINP(e),XR(F)
  • Actual
    • B(I);N_PINS(c)
    • Threat
      • B(I)
    • Vars
      • S(c);SBLOCK::P(B)
      • S(c);SBLOCK::S(H)
      • S(c);N_GUARD,S_CUTB(f)::S(H)
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