MESON Chess Problem Database

Problem Display
PID: 7644 (1r6/3Bp2b/2R2p2/2N5/2k5/2B2P2/R2Pp3/6K1 w - - 0 1)

Hoffmann, Fritz

POPS-OBOK, 1992

1r6/3Bp2b/2R2p2/2N5/2k5/2B2P2/R2Pp3/6K1

#2

8 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Rb5
      • 2.Be6#
  • Tries
    • 1.Sb3+?
      • 1...Kxb3
        • 2.Be6#
      • 1...Kd3
        • 2.Sc1#
      • 1...Kb5
        • 2.Sd4#
        • 2.Ra5#
      • 1...Kd5!
    • 1.Sd3+?
      • 1...Kb3
        • 2.Sc1#
        • 2.Be6#
      • 1...Kb5
        • 2.Ra5#
      • 1...Kd5
        • 2.Sf4#
      • 1...Kxd3!
    • 1.Sa6+?
      • 1...Kb3
        • 2.Be6#
      • 1...Kb5
        • 2.Sc7#
        • 2.Ra5#
      • 1...Kd5
        • 2.Sc7#
      • 1...Kd3!
    • 1.Se6+?
      • 1...Kd3
        • 2.Sf4#
      • 1...Kb5
        • 2.Sd4#
        • 2.Sc7#
        • 2.Ra5#
      • 1...Kd5
        • 2.Sf4#
        • 2.Sc7#
      • 1...Kb3!
    • 1.Sb7+?
      • 1...Kb3
        • 2.Be6#
      • 1...Kb5
        • 2.Ra5#
      • 1...Kd5
        • 2.Ra5#
        • 2.Rc5#
      • 1...Kd3!
  • Keys
    • 1.Se4+!
      • 1...Kb3
        • 2.Be6#
      • 1...Kd3
        • 2.Sf2#
      • 1...Kb5
        • 2.Ra5#
      • 1...Kd5
        • 2.Rc5#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • R(f);SBLOCK::B(H)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(b);S_FLIGHT,XS(F)::B(H)
        • K(b);S_FLIGHT::S(F)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(F);CHECK
      • Vars
        • K(b);S_FLIGHT::R1(B)
        • K(b);S_FLIGHT::S(F)
      • Refutation
        • K(b);S_FLIGHT,XS(F)
    • Try
      • S(F);CHECK
      • Vars
        • K(b);S_FLIGHT::B(H)
        • K(b);S_FLIGHT::S(F)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(F);CHECK
      • Vars
        • K(b);S_FLIGHT::S(F)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(F);CHECK
      • Vars
        • K(b);S_FLIGHT::B(H)
        • K(b);S_FLIGHT::R1(B)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • S(F);CHECK
    • Vars
      • K(b);S_FLIGHT::B(H)
      • K(b);S_FLIGHT::S(F)
      • K(b);S_FLIGHT::R1(B)
      • K(b);S_FLIGHT::R1(G)
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