MESON Chess Problem Database

Problem Display
PID: 140842 (2B4n/8/8/1K1Nk3/Rp1RN3/8/1n1P2P1/6B1 w - - 0 1)

Steiner, Paul

StrateGems, 1998

2B4n/8/8/1K1Nk3/Rp1RN3/8/1n1P2P1/6B1

#2

9 + 4

6490 yacpdb 2011

SOLUTION

  • SOUND
  • Sets
    • 1...b3
      • 2.Bh2#
  • Tries
    • 1.Sf4?
      • 1...Kxf4
        • 2.Bh2#
      • 1...Sxa4
        • 2.Sd3#
      • 1...Sd1
        • 2.Sd3#
      • 1...Sd3
        • 2.Sxd3#
      • 1...Sc4
        • 2.Sd3#
      • 1...Sg6
        • 2.Sxg6#
      • 1...Sf7
        • 2.Sg6#
      • 1...b3!
  • Keys
    • 1.Sd6!
      • 1...Kxd6
        • 2.Bh2#
      • 1...Sxa4
        • 2.Sc4#
      • 1...Sd1
        • 2.Sc4#
      • 1...Sd3
        • 2.Sc4#
      • 1...Sc4
        • 2.Sxc4#
      • 1...Sg6
        • 2.Sf7#
      • 1...Sf7
        • 2.Sxf7#
      • 1...b3
        • 2.Bh2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • P(b);::B(A)
  • Tries
    • Try
      • S(H);
      • Vars
        • K(c);OGATEB,S_FLIGHT,XS(H)::B(A)
        • S(a);N_GUARD,XR(D)::S(H)
        • S(a);N_GUARD::S(H)
        • S(a);N_GUARD::S(H),XS(a)
        • S(d);N_GUARD::S(H),XS(d)
        • S(d);N_GUARD::S(H)
      • Refutation
        • P(b);
  • Actual
    • S(F);
    • Vars
      • K(c);S_FLIGHT,XS(F)::B(A)
      • S(a);N_GUARD,XR(D)::S(F)
      • S(a);N_GUARD::S(F)
      • S(a);N_GUARD::S(F),XS(a)
      • S(d);N_GUARD::S(F)
      • S(d);N_GUARD::S(F),XS(d)
      • P(b);::B(A)
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