MESON Chess Problem Database

Problem Display
PID: 52815 (kB6/1RP5/8/N1br4/RpN5/1Pprp2b/K2n4/7B w - - 0 1)

Maleika, Gerhard

Die Schwalbe, 2004

kB6/1RP5/8/N1br4/RpN5/1Pprp2b/K2n4/7B

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Ra7#
    • 1...Re5
      • 2.Ra7#
    • 1...Rf5
      • 2.Ra7#
    • 1...Rg5
      • 2.Ra7#
    • 1...Rh5
      • 2.Ra7#
    • 1...Rd6
      • 2.Ra7#
    • 1...Rd7
      • 2.Ra7#
    • 1...Rd8
      • 2.Ra7#
    • 1...Bb6
      • 2.Sxb6#
    • 1...Bd6
      • 2.Sb6#
      • 2.Ra7#
    • 1...Ba7
      • 2.Rxa7#
    • 1...Be7
      • 2.Sb6#
      • 2.Ra7#
    • 1...Bf8
      • 2.Sb6#
      • 2.Ra7#
  • Tries
    • 1.Sc6+?
      • 1...Ba7
        • 2.Raxa7#
        • 2.Rbxa7#
      • 1...Kxb7!
    • 1.Bxd5?
      • threat
        • 2.Ra7#
      • 1...Ba7
        • 2.Rxa7#
      • 1...Rxd5!
  • Keys
    • 1.Rb6!
      • threat
        • 2.Sc6#
        • 2.Sb7#
      • 1...Bxb6
        • 2.Sxb6#
      • 1...Sxb3
        • 2.Sxb3#
      • 1...Sxc4
        • 2.Sxc4#
      • 1...Bd7
        • 2.Sc6#
      • 1...Bc8
        • 2.Sb7#
      • 1...Bd4
        • 2.Bxd5#
      • 1...Bd6
        • 2.Ra6#
      • 1...Be7
        • 2.Ra6#
      • 1...Bf8
        • 2.Ra6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 9
  • Sets
    • R(h);::B(A)+R(G),DCHECK
    • B(g);N_GUARD::S(E),XB(g)
    • B(g);N_GUARD::R1(G),XB(g)
  • Tries
    • Try
      • S(F);CHECK
      • Refutation
        • K(i);S_FLIGHT,XR(G)
    • Try
      • B(A);XR(h)
      • Threat
        • B(A)+R(G),DCHECK
      • Vars
        • B(g);::B(A)+R(G),DCHECK,XB(g)
      • Refutation
        • R(c);XB(A)
  • Actual
    • R(G);P_PINR(h)
    • Threat
      • DUALS(2)
    • Vars
      • B(g);XR(G)::S(E),XB(g)
      • S(a);XP(C)::R(D)+S(F),XS(a)
      • S(a);XS(E)::R(D)+S(F),XS(a)
      • B(e);::R(D)+S(F)
      • B(g);S_CUTR(c)::B(A),XR(h)
      • B(g);N_GUARD::R(G)
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