MESON Chess Problem Database

Problem Display
PID: 109916 (1K6/1p6/bR6/1nkPp3/8/1PN5/1PP1P3/4B3 w - - 0 1)

Prestes, Moacyr

Caissa, 1980

1K6/1p6/bR6/1nkPp3/8/1PN5/1PP1P3/4B3

#2

9 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kb4
      • 2.Sa4#
      • 2.Se4#
    • 1...Kd4
      • 2.Bf2#
    • 1...Kxb6
      • 2.Sa4#
    • 1...Sa3
      • 2.Bf2#
    • 1...Sd6
      • 2.Bf2#
    • 1...Sa7
      • 2.Bf2#
    • 1...Sc7
      • 2.Bf2#
  • Tries
    • 1.Rc6+?
      • 1...Kb4
        • 2.Sa2#
      • 1...Kd4
        • 2.Bf2#
      • 1...bxc6!
  • Keys
    • 1.e4!
      • 1...Kb4
        • 2.Sa4#
      • 1...Kd4
        • 2.Bf2#
      • 1...Kxb6
        • 2.Sa4#
      • 1...Sxc3
        • 2.Bf2#
      • 1...Sa3
        • 2.Bf2#
      • 1...Sd4
        • 2.Sa4#
      • 1...Sd6
        • 2.Bf2#
      • 1...Sa7
        • 2.Bf2#
      • 1...Sc7
        • 2.Bf2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::B(A)
    • K(b);S_FLIGHT,XR(H)::S(F)
    • S(a);N_GUARD::B(A)
  • Tries
    • Try
      • R(H);CHECK
      • Vars
        • K(b);S_FLIGHT::B(A)+S(F),DCHECK
        • K(b);S_FLIGHT::B(A)
      • Refutation
        • P(e);XR(H)
  • Actual
    • P(D);
    • Vars
      • K(b);P_SPINS(a),S_FLIGHT::B(A)+S(F)
      • K(b);S_FLIGHT::B(A)
      • K(b);S_FLIGHT,XR(H)::S(F)
      • S(a);N_GUARD,XS(F)::B(A)
      • S(a);N_GUARD::B(A)
      • S(a);SBLOCK::S(F)
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