MESON Chess Problem Database

Problem Display
PID: 5986 (k4N1R/2K2P2/1Bnp4/2p1p3/3p4/NB3n2/6qr/R5r1 w - - 0 1)

Larsen, Karl Adolf Koefoed

Chemnitzer Tageblatt, 1926

k4N1R/2K2P2/1Bnp4/2p1p3/3p4/NB3n2/6qr/R5r1

#2

8 + 10

SOLUTION

  • SOUND
  • Tries
    • 1.Sb1+?
      • 1...Sa5
        • 2.Bd5#
        • 2.Rxa5#
      • 1...Sa7
        • 2.Bd5#
        • 2.Rxa7#
      • 1...Qa2!
    • 1.Sc2+?
      • 1...Sa5
        • 2.Bd5#
        • 2.Rxa5#
      • 1...Sa7
        • 2.Bd5#
        • 2.Rxa7#
      • 1...Rxa1!
    • 1.Sg6+?
      • 1...Sb8
        • 2.Bd5#
        • 2.Rxb8#
      • 1...Sd8
        • 2.Bd5#
        • 2.Rxd8#
      • 1...Rxh8!
    • 1.Sh7+?
      • 1...Sb8
        • 2.Bd5#
        • 2.Rxb8#
      • 1...Sd8
        • 2.Bd5#
        • 2.Rxd8#
      • 1...Qg8!
  • Keys
    • 1.Bd5!
      • threat
        • 2.Bxc6#
      • 1...Se1
        • 2.Sc2#
      • 1...Sd2
        • 2.Sb1#
      • 1...Sh4
        • 2.Sg6#
      • 1...Sg5
        • 2.Sh7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);CHECK
      • Refutation
        • Q(b);P_SPINQ(b)
    • Try
      • S(B);CHECK
      • Refutation
        • R(a);XR(A)
    • Try
      • S(G);CHECK
      • Refutation
        • R(c);XR(H)
    • Try
      • S(G);CHECK
      • Refutation
        • Q(b);P_SPINQ(b)
  • Actual
    • B(C);P_PINS(h)
    • Threat
      • B(C),XS(h)
    • Vars
      • S(d);S_CUTR(a)::R(A)+S(B)
      • S(d);S_CUTQ(b)::R(A)+S(B)
      • S(d);S_CUTR(c)::R(H)+S(G)
      • S(d);S_CUTQ(b)::R(H)+S(G)
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