MESON Chess Problem Database

Problem Display
PID: 50193 (3QR1b1/1p2B3/1p6/bP1NN2R/K2k2p1/1P3p1n/5P2/1B6 w - - 0 1)

Zajic, Helmut

Die Schwalbe, 1988

3QR1b1/1p2B3/1p6/bP1NN2R/K2k2p1/1P3p1n/5P2/1B6

#2

11 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...g3
      • 2.Sxf3#
  • Tries
    • 1.Se3+?
      • 1...Kc3
        • 2.Sd1#
      • 1...Bd5!
    • 1.Sd3?
      • threat
        • 2.Bf6#
      • 1...Ke4
        • 2.Sf6#
      • 1...Be6!
    • 1.Qxb6+?
      • 1...Kxd5
        • 2.Rd8#
        • 2.Qd6#
      • 1...Bxb6!
  • Keys
    • 1.Bf6!
      • threat
        • 2.Sd3#
        • 2.Sd7#
      • 1...Kc5
        • 2.Sd3#
      • 1...Be6
        • 2.Sd7#
      • 1...Sg5
        • 2.Sd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • P(d);N_GUARD::S(G),XP(a)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(c);S_FLIGHT::S(F)
      • Refutation
        • B(h);P_SPINB(h)
    • Try
      • S(G);
      • Threat
        • B(I)
      • Vars
        • K(c);P-FLIGHT::S(F)
      • Refutation
        • B(h);
    • Try
      • Q(J);CHECK,XP(f)
      • Refutation
        • B(e);XQ(J)
  • Actual
    • B(I);
    • Threat
      • DUALS(2)
    • Vars
      • K(c);S_FLIGHT::S(G)
      • B(h);::B(I)+S(G)
      • S(b);::B(I)+S(G)
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