MESON Chess Problem Database

Problem Display
PID: 74297 (r2k1B2/N1pp3R/5K2/7B/b1pQ4/b7/8/8 w k - 0 1)

Buchwald, Julius

Comm., Chess Life, 1951

r2k1B2/N1pp3R/5K2/7B/b1pQ4/b7/8/8

#2

6 + 7

5759 Selected Compositions of Julius Buchwald 2005
145 StrateGems 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Bc1
      • 2.Be7#
    • 1...Bb2
      • 2.Be7#
    • 1...Be7+
      • 2.Bxe7#
    • 1...Bd1
      • 2.Rxd7#
      • 2.Qxd7#
    • 1...Bc2
      • 2.Rxd7#
      • 2.Qxd7#
    • 1...Bb3
      • 2.Rxd7#
      • 2.Qxd7#
    • 1...c6
      • 2.Rxd7#
      • 2.Qb6#
      • 2.Qxd7#
  • Tries
    • 1.Bd6?
      • threat
        • 2.Rh8#
      • 1...cxd6
        • 2.Qb6#
      • 1...Bxd6!
  • Keys
    • 1.Qe5!
      • threat
        • 2.Qe8#
      • 1...Be7+
        • 2.Bxe7#
        • 2.Qxe7#
      • 1...d5
        • 2.Qxc7#
      • 1...Bb2
        • 2.Be7#
      • 1...c5
        • 2.Be7#
      • 1...c6
        • 2.Qa5#
      • 1...d6
        • 2.Qe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • B(a);N_GUARD::B(F)
    • B(a);N_GUARD,P_PINQ(A)::B(F)
    • B(a);CHECK,N_GUARD::B(F),XB(a)
  • Tries
    • Try
      • B(F);N_PINP(e)
      • Threat
        • R(E)
      • Vars
        • P(d);OGATEB,XB(F)::QAB(A)
      • Refutation
        • B(a);XB(F)
  • Actual
    • Q(A);N_PINP(e)
    • Threat
      • QAR1(A)
    • Vars
      • P(e);::QAB1(A),XP(d)
      • B(a);N_GUARD,P_PINQ(A)::B(F)
      • P(d);S_CUTB(a)::B(F)
      • P(d);OGATEB::QAB(A)
      • P(e);S_CUTB(a)::QAB1(A)
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