MESON Chess Problem Database

Problem Display
PID: 134343 (B5b1/3Pr3/5B1Q/2N4R/KPk5/R1brPN2/8/5n2 w - - 0 1)

Mangalis, Laimons

1st HM., American Chess Bulletin, 1956

B5b1/3Pr3/5B1Q/2N4R/KPk5/R1brPN2/8/5n2

#2

11 + 6

56 The Problemist 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rd1
      • 2.Rxc3#
    • 1...Rd2
      • 2.Rxc3#
    • 1...Rd5
      • 2.Rxc3#
    • 1...Rd6
      • 2.Rxc3#
    • 1...Rdxd7
      • 2.Rxc3#
  • Tries
    • 1.Se6?
      • threat
        • 2.Rc5#
      • 1...Rdxd7
        • 2.Rxc3#
      • 1...Bxb4
        • 2.Se5#
      • 1...Rd1
        • 2.Rxc3#
      • 1...Rd2
        • 2.Rxc3#
      • 1...Rd4
        • 2.Se5#
      • 1...Rd5
        • 2.Rxc3#
      • 1...Rd6
        • 2.Rxc3#
      • 1...Bd4
        • 2.Bd5#
      • 1...Be5
        • 2.Sxe5#
      • 1...Rxe3!
    • 1.Bd5+?
      • 1...Rxd5
        • 2.Rxc3#
      • 1...Bxd5!
  • Keys
    • 1.Bd4!
      • threat
        • 2.Qa6#
      • 1...Re6
        • 2.Bd5#
      • 1...Be6
        • 2.Se5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • R(c);N_GUARD::R1(A),XB(b)
    • R(c);N_GUARD,XP(J)::R1(A),XB(b)
  • Tries
    • Try
      • S(F);
      • Threat
        • R1(G)
      • Vars
        • R(c);N_GUARD,XP(J)::R1(A),XB(b)
        • B(b);N_GUARD,XP(E)::S(C)
        • R(c);N_GUARD::R1(A),XB(b)
        • R(c);S_CUTB(b)::S(C)
        • B(b);S_CUTR(c)::B(K)
        • B(b);N_GUARD::S(C),XB(b)
      • Refutation
        • R(c);XP(B)
    • Try
      • B(K);CHECK
      • Vars
        • R(c);XB(K)::R1(A),XB(b)
      • Refutation
        • B(f);XB(K)
  • Actual
    • B(H);
    • Threat
      • QAB(I)
    • Vars
      • R(e);S_CUTB(f)::B(K)
      • B(f);S_CUTR(e)::S(C)
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