MESON Chess Problem Database

Problem Display
PID: 104567 (1RN1Bb1B/p1R1p3/2Nrk1Kn/5p1P/2P5/8/8/8 w - - 0 1)

Riczu, Lajos

Canadian Chess Chat, 1981

1RN1Bb1B/p1R1p3/2Nrk1Kn/5p1P/2P5/8/8/8

#2

9 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Sxd4#
    • 1...Rxc6
      • 2.Bd7#
      • 2.Rxc6#
    • 1...Rd7
      • 2.Bxd7#
    • 1...Rd8
      • 2.Sxd8#
    • 1...Bg7
      • 2.Rxe7#
    • 1...Sg4
      • 2.Bf7#
    • 1...Sf7
      • 2.Bxf7#
    • 1...Sg8
      • 2.Bf7#
  • Tries
    • 1.Rb6?
      • threat
        • 2.Sd4#
        • 2.Sd8#
      • 1...Rxc6
        • 2.Bd7#
        • 2.Rbxc6#
        • 2.Rcxc6#
      • 1...Rd4
        • 2.Sxd4#
        • 2.Sd8#
      • 1...Rd8
        • 2.Sd4#
        • 2.Sxd8#
      • 1...Bg7
        • 2.Rxe7#
      • 1...Sf7
        • 2.Sd4#
        • 2.Bxf7#
      • 1...axb6!
  • Keys
    • 1.Rb5!
      • threat
        • 2.Re5#
      • 1...Rd5
        • 2.cxd5#
      • 1...Bg7
        • 2.Rxe7#
      • 1...Sg4
        • 2.Bf7#
      • 1...Sf7
        • 2.Bxf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • R(b);N_GUARD::S(C),XR(b)
    • R(b);N_GUARD::B(H),XR(b)
    • B(g);N_GUARD::R1(E),XP(f)
    • S(d);N_GUARD::B(H)
    • S(d);N_GUARD::B(H),XS(d)
  • Tries
    • Try
      • R(F);
      • Threat
        • DUALS(2)
      • Vars
        • B(g);N_GUARD::R1(E),XP(f)
      • Refutation
        • P(e);XR(F)
  • Actual
    • R(F);
    • Threat
      • R1(F)
    • Vars
      • R(b);OGATE::P(A),XR(b)
      • B(g);N_GUARD::R1(E),XP(f)
      • S(d);N_GUARD::B(H)
      • S(d);N_GUARD::B(H),XS(d)
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