MESON Chess Problem Database

Problem Display
PID: 287579 (7B/8/pp6/qp2p3/b7/1pk1PN2/1rpNBK2/Q1b5 w - - 0 1)

Willemsens, Luis Cornelis

Probleemblad, 1959

7B/8/pp6/qp2p3/b7/1pk1PN2/1rpNBK2/Q1b5

#2

7 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...b4
      • 2.Se4#
  • Tries
    • 1.Qa3?
      • threat
        • 2.Se4#
        • 2.Bxe5#
      • 1...Bxd2
        • 2.Bxe5#
      • 1...b4
        • 2.Se4#
      • 1...Qb4!
  • Keys
    • 1.Sxe5!
      • 1...Kxd2
        • 2.Sf3#
      • 1...Kb4
        • 2.Sd3#
      • 1...Bxd2
        • 2.Sc6#
      • 1...Qb4
        • 2.Sec4#
      • 1...b4
        • 2.Se4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • P(h);SBLOCK::S(B)
  • Tries
    • Try
      • Q(A);N_PINP(i),N_PINR(b),P_PINP(d)
      • Threat
        • DUALS(2)
      • Vars
        • B(a);XS(B)::B(G),XP(i)
        • P(h);::S(B)
      • Refutation
        • Q(g);
  • Actual
    • S(F);XP(i)
    • Vars
      • K(e);N_GUARD,N_SPINR(b),S_FLIGHT,XS(B)::S(F)
      • K(e);N_GUARD,N_SPINR(b),S_FLIGHT::S(F)
      • B(a);SBLOCK,XS(B)::B(G)+S(F)
      • Q(g);SBLOCK::B(G)+S(F)
      • P(h);SBLOCK::S(B)
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