MESON Chess Problem Database

Problem Display
PID: 107878 (2BB4/8/1K6/1N1pkP2/3RbR2/5p1P/1N3P2/8 w - - 0 1)

Carvalho, G

Boletim da UBP, 1991

2BB4/8/1K6/1N1pkP2/3RbR2/5p1P/1N3P2/8

#2

10 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf4
      • 2.Sd3#
    • 1...Bd3
      • 2.Sxd3#
    • 1...Bxf5
      • 2.Rxf5#
  • Tries
    • 1.Sc4+?
      • 1...dxc4
        • 2.Rfxe4#
      • 1...Kxf4!
    • 1.Bf6+?
      • 1...Kxf4
        • 2.Sd3#
      • 1...Kxf6!
    • 1.f6?
      • threat
        • 2.Bc7#
      • 1...Bf5
        • 2.Rxf5#
      • 1...Kxf4!
  • Keys
    • 1.Sd6!
      • 1...Kxd4
        • 2.Bf6#
      • 1...Kxf4
        • 2.Sd3#
      • 1...Kxd6
        • 2.Sc4#
      • 1...Bxf5
        • 2.Sf7#
      • 1...Bb1
        • 2.Sf7#
      • 1...Bc2
        • 2.Sf7#
      • 1...Bd3
        • 2.Sf7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(d);P_SPINB(b),S_FLIGHT,XR(E)::S(A)
    • B(b);N_GUARD::S(A),XB(b)
    • B(b);OGATE,XP(G)::R1(E),XB(b)
  • Tries
    • Try
      • S(A);CHECK
      • Vars
        • P(c);XS(A)::R1(E),XB(b)
      • Refutation
        • K(d);P_SPINB(b),S_FLIGHT,XR(E)
    • Try
      • B(J);CHECK
      • Vars
        • K(d);P_SPINB(b),S_FLIGHT,XR(E)::S(A)
      • Refutation
        • K(d);S_FLIGHT,XB(J)
    • Try
      • P(G);
      • Threat
        • B(J)
      • Vars
        • B(b);N_GUARD::R1(E),XB(b)
      • Refutation
        • K(d);P_SPINB(b),S_FLIGHT,XR(E)
  • Actual
    • S(F);
    • Vars
      • K(d);P_SPINB(b),S_FLIGHT,XR(D)::B(J)
      • K(d);P_SPINB(b),S_FLIGHT,XR(E)::S(A)
      • K(d);P_SPINP(c),S_FLIGHT,XS(F)::S(A)
      • B(b);XP(G)::S(F)
      • B(b);::S(F)
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