MESON Chess Problem Database

Problem Display
PID: 166708 (3R4/2b5/8/7N/3p4/8/5K1p/7k w - - 0 1)

Lincoln, Robert A

StrateGems, 2016

3R4/2b5/8/7N/3p4/8/5K1p/7k

#2

3 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Bg3+
      • 2.Sxg3#
    • 1...Ba5
      • 2.Sg3#
    • 1...Bb6
      • 2.Sg3#
    • 1...Bxd8
      • 2.Sg3#
  • Tries
    • 1.Ra8?
      • threat
        • 2.Ra1#
      • 1...Bg3+
        • 2.Sxg3#
      • 1...Ba5
        • 2.Sg3#
      • 1...Bf4!
    • 1.Re8?
      • threat
        • 2.Re1#
      • 1...Bg3+
        • 2.Sxg3#
      • 1...Ba5
        • 2.Sg3#
      • 1...Be5!
  • Keys
    • 1.Rxd4!
      • threat
        • 2.Rd1#
      • 1...Bg3+
        • 2.Sxg3#
      • 1...Ba5
        • 2.Sg3#
      • 1...Bb6
        • 2.Sg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • B(d);CHECK,N_GUARD::S(B),XB(d)
    • B(d);N_GUARD::S(B)
    • B(d);N_GUARD,XR(C)::S(B)
  • Tries
    • Try
      • R(C);
      • Threat
        • R(C)
      • Vars
        • B(d);CHECK,N_GUARD::S(B),XB(d)
        • B(d);N_GUARD::S(B)
      • Refutation
        • B(d);
    • Try
      • R(C);
      • Threat
        • R(C)
      • Vars
        • B(d);CHECK,N_GUARD::S(B),XB(d)
        • B(d);N_GUARD::S(B)
      • Refutation
        • B(d);
  • Actual
    • R(C);XP(c)
    • Threat
      • R(C)
    • Vars
      • B(d);CHECK,N_GUARD::S(B),XB(d)
      • B(d);N_GUARD::S(B)
      • B(d);N_GUARD,P_PINR(C)::S(B)
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