MESON Chess Problem Database

Problem Display
PID: 187805 (8/7K/5p2/2N2k2/2rR4/n1P2NPb/8/3B4 w - - 0 1)

Hoffmann, Karoly

Pesti Naplo, 1909

8/7K/5p2/2N2k2/2rR4/n1P2NPb/8/3B4

#2

7 + 5

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc3
      • 2.Rf4#
    • 1...Bf1
      • 2.g4#
    • 1...Bg2
      • 2.g4#
    • 1...Bg4
      • 2.Rd5#
    • 1...Sb1
      • 2.Bc2#
    • 1...Sc2
      • 2.Bxc2#
    • 1...Sb5
      • 2.Bc2#
  • Tries
    • 1.Sh4+?
      • 1...Kg5
        • 2.Se4#
      • 1...Ke5!
  • Keys
    • 1.Bb3!
      • 1...Rxc3
        • 2.Be6#
        • 2.Rf4#
      • 1...Rxd4
        • 2.Be6#
      • 1...Rxc5
        • 2.Rf4#
      • 1...Ra4
        • 2.Be6#
      • 1...Rb4
        • 2.Be6#
      • 1...Bf1
        • 2.g4#
      • 1...Bg2
        • 2.g4#
      • 1...Bg4
        • 2.Rd5#
      • 1...Sb1
        • 2.Bc2#
      • 1...Sc2
        • 2.Bxc2#
      • 1...Sb5
        • 2.Bc2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • R(c);N_GUARD,XP(B)::R1(E)
    • B(b);N_GUARD::P(D)
    • B(b);SBLOCK::R(E)
    • S(a);N_GUARD::B(A)
    • S(a);N_GUARD::B(A),XS(a)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(d);P-FLIGHT::S(F)
      • Refutation
        • K(d);P-FLIGHT
  • Actual
    • B(A);
    • Vars
      • R(c);OGATE,XR(E)::B(A)
      • R(c);N_GUARD,XS(F)::R1(E)
      • R(c);OGATE::B(A)
      • B(b);N_GUARD::P(D)
      • B(b);SBLOCK::R(E)
      • S(a);N_GUARD::B(A)
      • S(a);N_GUARD::B(A),XS(a)
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Developed and maintained by Brian Stephenson.
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