MESON Chess Problem Database

Problem Display
PID: 206817 (1n5K/8/1R4rk/r2N1p1b/8/2p2N2/q6Q/2b5 w - - 0 1)

Aleksandrov, Vladimir Aleksandrovich

Sachova skladba, 1991

1n5K/8/1R4rk/r2N1p1b/8/2p2N2/q6Q/2b5

#2

5 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rd6
      • 2.Rxd6#
    • 1...Re6
      • 2.Rxe6#
    • 1...Rf6
      • 2.Rxf6#
    • 1...Bb2
      • 2.Qf4#
    • 1...Ba3
      • 2.Qf4#
    • 1...Bf4
      • 2.Qxf4#
  • Keys
    • 1.Sf6!
      • threat
        • 2.Qxh5#
      • 1...Qg8+
        • 2.Sxg8#
      • 1...Rg8+
        • 2.Sxg8#
      • 1...Qxh2
        • 2.Sg8#
      • 1...Rxf6
        • 2.Rxf6#
      • 1...Rg5
        • 2.Sg4#
        • 2.Sg8#
      • 1...f4
        • 2.Sg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • R(g);OGATEB::R(D),XR(g)
    • B(a);N_GUARD::QAB(A)
    • B(a);N_GUARD::QAB(A),XB(a)
  • Actual
    • S(C);N_PINR(g)
    • Threat
      • QAR1(A),XB(f)
    • Vars
      • Q(b);CHECK,N_GUARD::S(C),XQ(b)
      • R(g);CHECK::R(D)+S(C),DCHECK,XR(g)
      • Q(b);N_GUARD,N_SPINB(f),XQ(A)::S(C)
      • R(g);OGATE,P_SPINR(g),XS(C)::R(D),XR(g)
      • P(e);N_GUARD::S(C)
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