MESON Chess Problem Database

Problem Display
PID: 140037 (2NB4/2p4n/K2R4/2N1rkpP/3R4/4P2b/4B3/8 w - - 0 1)

Shire, David J

7th HM., StrateGems, 1999

2NB4/2p4n/K2R4/2N1rkpP/3R4/4P2b/4B3/8

#2

9 + 6

145 StrateGems 2000

SOLUTION

  • SOUND
  • Sets
    • 1...Rd5
      • 2.R4xd5#
      • 2.R6xd5#
    • 1...Bg2
      • 2.Bg4#
    • 1...Bg4
      • 2.Bxg4#
    • 1...Sf6
      • 2.Rxf6#
    • 1...Sf8
      • 2.Rf6#
    • 1...g4
      • 2.Rf4#
    • 1...cxd6
      • 2.Sxd6#
  • Tries
    • 1.R6d5?
      • threat
        • 2.Bd3#
      • 1...Rxd5
        • 2.Rxd5#
      • 1...Bg2
        • 2.Bg4#
      • 1...Sf6
        • 2.Se7#
      • 1...Bf1!
  • Keys
    • 1.R4d5!
      • threat
        • 2.Se7#
      • 1...Rxd5
        • 2.Rxd5#
      • 1...cxd6
        • 2.Sxd6#
      • 1...g4
        • 2.Bd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • B(a);N_GUARD::B(A)
    • B(a);N_GUARD::B(A),XB(a)
    • S(f);N_GUARD::R1(G),XS(f)
    • S(f);N_GUARD::R1(G)
    • P(d);N_GUARD::R1(C)
    • P(e);XR(G)::S(H),XP(e)
  • Tries
    • Try
      • R(G);P_PINR(b)
      • Threat
        • B(A)
      • Vars
        • R(b);N_SPINR(b),OGATE,XR(G)::R(C),XR(b)
        • B(a);N_GUARD::B(A)
        • S(f);SBLOCK::S(H)
      • Refutation
        • B(a);P_PINB(A)
  • Actual
    • R(C);P_PINR(b)
    • Threat
      • S(H)
    • Vars
      • R(b);N_SPINR(b),OGATE,XR(C)::R(G),XR(b)
      • P(e);XR(G)::S(H),XP(e)
      • P(d);SBLOCK::B(A)
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