MESON Chess Problem Database

Problem Display
PID: 151544 (2bB4/K2n4/3k1p1R/1B4N1/2P2PP1/1N2P3/8/8 w - - 0 1)

Albarda, Johannes

2nd Prize, Het Parool, 1971

2bB4/K2n4/3k1p1R/1B4N1/2P2PP1/1N2P3/8/8

#2

10 + 4

15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Tries
    • 1.Sd4?
      • threat
        • 2.Se4#
      • 1...Kc5
        • 2.Be7#
      • 1...Sc5
        • 2.Sf7#
      • 1...Bb7!
    • 1.Sc5?
      • threat
        • 2.Sce4#
        • 2.Sge4#
      • 1...Kxc5
        • 2.Be7#
      • 1...Bb7
        • 2.Sxb7#
      • 1...Sxc5!
    • 1.Be7+?
      • 1...Kc7
        • 2.Se6#
      • 1...Kxe7!
    • 1.c5+?
      • 1...Kd5
        • 2.e4#
      • 1...Sxc5!
  • Keys
    • 1.f5!
      • threat
        • 2.Sf7#
      • 1...Ke5
        • 2.Bc7#
      • 1...Se5
        • 2.Se4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(A);
      • Threat
        • S(G)
      • Vars
        • K(a);N_SPINP(b),S_FLIGHT::B(J)
        • S(c);SBLOCK::S(G)
      • Refutation
        • B(d);
    • Try
      • S(A);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);N_SPINP(b),S_FLIGHT,XS(A)::B(J)
        • B(d);N_GUARD::S(A),XB(d)
      • Refutation
        • S(c);XS(A)
    • Try
      • B(J);CHECK
      • Vars
        • K(a);N_SPINP(b),S_FLIGHT::S(G)
      • Refutation
        • K(a);N_SPINP(b),S_FLIGHT,XB(J)
    • Try
      • P(C);CHECK
      • Vars
        • K(a);N_SPINP(b),P-FLIGHT::P(B)
      • Refutation
        • S(c);XP(C)
  • Actual
    • P(D);
    • Threat
      • S(G)
    • Vars
      • K(a);N_SPINP(b),S_FLIGHT::B(J)
      • S(c);SBLOCK::S(G)
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