MESON Chess Problem Database

Problem Display
PID: 140017 (6n1/8/7B/8/6B1/2b5/K2P4/2k1NN1R w - - 0 1)

Paslack, Rainer

Die Schwalbe, 1966

6n1/8/7B/8/6B1/2b5/K2P4/2k1NN1R

#2

7 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd2
      • 2.Bxd2#
    • 1...Sf6
      • 2.dxc3#
    • 1...Se7
      • 2.dxc3#
  • Tries
    • 1.d3+?
      • 1...Bd2
        • 2.Bxd2#
      • 1...Sxh6!
    • 1.d4+?
      • 1...Bd2
        • 2.Bxd2#
      • 1...Sxh6!
  • Keys
    • 1.Se3!
      • threat
        • 2.Sf3#
      • 1...Kxd2
        • 2.Sc4#
      • 1...Bxd2
        • 2.Sd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • B(b);OGATE,P_SPINB(b),XP(E)::B(G),XB(b)
    • S(c);N_GUARD::B(G)+P(E),XB(b)
  • Tries
    • Try
      • P(E);CHECK
      • Vars
        • B(b);N_GUARD,P_SPINB(b)::B(G),XB(b)
      • Refutation
        • S(c);XB(G)
    • Try
      • P(E);CHECK
      • Vars
        • B(b);N_GUARD,P_SPINB(b)::B(G),XB(b)
      • Refutation
        • S(c);XB(G)
  • Actual
    • S(B);
    • Threat
      • R(C)+S(A)
    • Vars
      • K(a);S_FLIGHT,XP(E)::B(G)+S(B),DCHECK
      • B(b);SBLOCK,XP(E)::R(C)+S(A),DCHECK
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