MESON Chess Problem Database

Problem Display
PID: 159587 (8/8/8/7B/4R1p1/5Nb1/2R5/5K1k w - - 0 1)

Tomson, Brian

Chess in Australia, 1972

8/8/8/7B/4R1p1/5Nb1/2R5/5K1k

#2

5 + 3

15561 Fifty Chess Problems (Brian Tomson) 1983

SOLUTION

  • SOUND
  • Sets
    • 1...Be1
      • 2.Rh2#
    • 1...Bh2
      • 2.Rxh2#
    • 1...Bh4
      • 2.Rh2#
    • 1...gxf3
      • 2.Bxf3#
  • Tries
    • 1.Rg2?
      • threat
        • 2.Rg1#
      • 1...Bf2
        • 2.Rh2#
      • 1...Bh2
        • 2.Rxh2#
      • 1...gxf3!
    • 1.Rxg4?
      • 1...Be1
        • 2.Rh2#
        • 2.Rg1#
      • 1...Bh2
        • 2.Rxh2#
      • 1...Bf4
        • 2.Rg1#
      • 1...Bh4
        • 2.Rh2#
        • 2.Rg1#
        • 2.Rxh4#
      • 1...Be5
        • 2.Rg1#
      • 1...Bd6
        • 2.Rg1#
      • 1...Bc7
        • 2.Rg1#
      • 1...Bb8
        • 2.Rg1#
      • 1...Bf2!
  • Keys
    • 1.Re1!
      • 1...Bxe1
        • 2.Rh2#
      • 1...gxf3
        • 2.Bxf3#
      • 1...Bf2
        • 2.Kxf2#
      • 1...Bh2
        • 2.Rxh2#
      • 1...Bf4
        • 2.Kf2#
      • 1...Bh4
        • 2.Rh2#
      • 1...Be5
        • 2.Kf2#
      • 1...Bd6
        • 2.Kf2#
      • 1...Bc7
        • 2.Kf2#
      • 1...Bb8
        • 2.Kf2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • B(b);N_GUARD::R1(B)
    • B(b);N_GUARD::R1(B),XB(b)
    • P(c);OGATE,XS(C)::B(E),XP(c)
  • Tries
    • Try
      • R(B);
      • Threat
        • R1(B)
      • Vars
        • B(b);N_GUARD::R1(B)
        • B(b);N_GUARD::R1(B),XB(b)
      • Refutation
        • P(c);XS(C)
    • Try
      • R(D);XP(c)
      • Vars
        • B(b);N_GUARD::R1(B),XB(b)
        • B(b);OGATE::R1(D)
      • Refutation
        • B(b);
  • Actual
    • R(D);
    • Vars
      • B(b);N_GUARD,XR(D)::R1(B)
      • P(c);OGATE,XS(C)::B(E),XP(c)
      • B(b);::R(D)+K(A),XB(b)
      • B(b);N_GUARD::R1(B),XB(b)
      • B(b);::R(D)+K(A)
      • B(b);N_GUARD::R1(B)
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