MESON Chess Problem Database

Problem Display
PID: 187871 (8/4KN2/2p1p2B/8/2Pk4/P7/2Q5/8 w - - 0 1)

Decker, Adolfph L

Deutsches Wochenschach, 1910

8/4KN2/2p1p2B/8/2Pk4/P7/2Q5/8

#2

6 + 3

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Be3#
  • Tries
    • 1.Kxe6?
      • 1...Kc5
        • 2.Be3#
      • 1...c5!
    • 1.Se5?
      • 1...Kc5
        • 2.Be3#
        • 2.Qf2#
      • 1...c5
        • 2.Sf3#
        • 2.Sc6#
      • 1...Kxe5!
    • 1.Qd3+?
      • 1...Kc5
        • 2.Be3#
      • 1...Kxd3!
    • 1.Qc3+?
      • 1...Ke4
        • 2.Sd6#
      • 1...Kc5
        • 2.Be3#
      • 1...Kxc3!
  • Keys
    • 1.Sd8!
      • 1...Kc5
        • 2.Be3#
      • 1...Ke5
        • 2.Sxc6#
      • 1...c5
        • 2.Sc6#
      • 1...e5
        • 2.Se6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::B(D)
  • Tries
    • Try
      • K(E);P-FLIGHT,XP(c)
      • Vars
        • K(a);S_FLIGHT::B(D)
      • Refutation
        • P(b);
    • Try
      • S(F);
      • Refutation
        • K(a);S_FLIGHT,XS(F)
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);S_FLIGHT::B(D)
      • Refutation
        • K(a);P-FLIGHT,XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P-FLIGHT::S(F)
        • K(a);S_FLIGHT::B(D)
      • Refutation
        • K(a);S_FLIGHT,XQ(A)
  • Actual
    • S(F);
    • Vars
      • K(a);S_FLIGHT::B(D)
      • K(a);S_FLIGHT::S(F),XP(b)
      • P(b);SBLOCK::S(F)
      • P(c);SBLOCK::S(F)
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