MESON Chess Problem Database

Problem Display
PID: 122963 (k1N5/Pp6/8/2b5/1p1p4/1P1K4/8/7Q w - - 0 1)

Langweil, Walter

Jas, 1928

k1N5/Pp6/8/2b5/1p1p4/1P1K4/8/7Q

#2

5 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sd6?
      • threat
        • 2.Qxb7#
      • 1...Kxa7
        • 2.Qxb7#
      • 1...Bxd6!
  • Keys
    • 1.Qa1!
      • 1...Bxa7
        • 2.Qxa7#
      • 1...b5
        • 2.Qh1#
      • 1...b6
        • 2.Qh1#
      • 1...Bb6
        • 2.Sxb6#
      • 1...Bd6
        • 2.Sb6#
      • 1...Be7
        • 2.Sb6#
      • 1...Bf8
        • 2.Sb6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);
      • Threat
        • QAB1(A),XP(d)
      • Vars
        • K(e);N_SPINP(d),P-FLIGHT,XP(D)::QAR1(A),XP(d)
      • Refutation
        • B(c);XS(E)
  • Actual
    • Q(A);N_PINP(d)
    • Vars
      • B(c);OGATE,P_SPINB(c),XP(D)::QAR1(A),XB(c)
      • P(d);OGATEB::QAB(A)
      • B(c);N_GUARD::S(E),XB(c)
      • B(c);N_GUARD::S(E)
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