MESON Chess Problem Database

Problem Display
PID: 72830 (2B2N2/5RPp/4p2r/5bkp/4p2r/4P1Pp/5N1K/B7 w - - 0 1)

Nanning, Frederik Willem

De Tijd, 1928

2B2N2/5RPp/4p2r/5bkp/4p2r/4P1Pp/5N1K/B7

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rf4
      • 2.exf4#
    • 1...Rg4
      • 2.Sxh3#
    • 1...Bg4
      • 2.Sxe4#
    • 1...Bg6
      • 2.Sxe6#
    • 1...e5
      • 2.Rxf5#
  • Tries
    • 1.g8Q+?
      • 1...Bg6
        • 2.Sxe6#
      • 1...Rg6!
    • 1.g8R+?
      • 1...Bg6
        • 2.Sxe6#
      • 1...Rg6!
  • Keys
    • 1.g8S!
      • 1...Rf4
        • 2.exf4#
      • 1...Rg4
        • 2.Sxh3#
      • 1...Rf6
        • 2.Bxf6#
      • 1...Rg6
        • 2.Sxh7#
      • 1...Bg4
        • 2.Sxe4#
      • 1...Bg6
        • 2.Sxe6#
      • 1...e5
        • 2.Rxf5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(c);OGATE::P(D),XR(c)
    • R(c);N_GUARD,SBLOCK,S_CUTB(d)::S(B),XP(a)
    • B(d);N_GUARD,SBLOCK,S_CUTR(c)::S(B),XP(b)
    • B(d);N_GUARD,SBLOCK,S_CUTR(h)::S(I),XP(g)
    • P(g);N_GUARD::R1(F),XB(d)
  • Tries
    • Try
      • P(G);CHECK
      • Vars
        • B(d);P_SPINB(d)::S(I),XP(g)
      • Refutation
        • R(h);P_SPINR(h)
    • Try
      • P(G);CHECK
      • Vars
        • B(d);P_SPINB(d)::S(I),XP(g)
      • Refutation
        • R(h);P_SPINR(h)
  • Actual
    • P(G);
    • Vars
      • R(c);OGATE::P(D),XR(c)
      • R(c);N_GUARD,SBLOCK,S_CUTB(d)::S(B),XP(a)
      • R(h);N_GUARD::B(A),XR(h)
      • R(h);N_GUARD,SBLOCK,S_CUTB(d)::S(I),XP(i)
      • B(d);N_GUARD,SBLOCK,S_CUTR(c)::S(B),XP(b)
      • B(d);N_GUARD,SBLOCK,S_CUTR(h)::S(I),XP(g)
      • P(g);N_GUARD::R1(F),XB(d)
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