MESON Chess Problem Database

Problem Display
PID: 82151 (1n6/1qN1R1n1/4p3/2N1k1P1/2pRp1P1/b3B2K/8/8 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Magyar Sakkelet, 1972

1n6/1qN1R1n1/4p3/2N1k1P1/2pRp1P1/b3B2K/8/8

#2

8 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qd5
      • 2.Rxd5#
    • 1...Qa6
      • 2.Rd5#
    • 1...Qc8
      • 2.Rd5#
    • 1...Qb1
      • 2.Rd5#
    • 1...Qb2
      • 2.Rd5#
    • 1...Qb3
      • 2.Rd5#
    • 1...Qb4
      • 2.Rd5#
    • 1...Qb5
      • 2.Rd5#
    • 1...Qb6
      • 2.Rd5#
    • 1...Qa7
      • 2.Rd5#
    • 1...Sf5
      • 2.Rxe6#
    • 1...Sh5
      • 2.Rxe6#
    • 1...Se8
      • 2.Rxe6#
    • 1...Sa6
      • 2.Sd7#
    • 1...Sc6
      • 2.Sd7#
      • 2.Rd5#
    • 1...Sd7
      • 2.Sxd7#
  • Tries
    • 1.S7xe6?
      • threat
        • 2.Bf4#
      • 1...Sxe6
        • 2.Rxe6#
      • 1...Qb3
        • 2.Sxg7#
      • 1...Sh5
        • 2.Sc7#
      • 1...Bc1!
  • Keys
    • 1.S5xe6!
      • threat
        • 2.Bf4#
      • 1...Sxe6
        • 2.Rxe6#
      • 1...Qb3
        • 2.Rd5#
      • 1...Bc1
        • 2.Sxg7#
      • 1...Sh5
        • 2.Sc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 13
  • Sets
    • Q(f);N_GUARD::R1(C),XQ(f)
    • Q(f);N_GUARD::R1(C)
    • Q(f);N_GUARD,P_PINB(A)::R1(C)
    • S(g);N_GUARD::R1(H),XP(e)
    • S(h);N_GUARD::S(E)
    • S(h);N_GUARD::S(E),XS(h)
  • Tries
    • Try
      • S(G);XP(e)
      • Threat
        • B(A)
      • Vars
        • S(g);OGATE,P_SPINS(g),XS(G)::R1(H),XS(g)
        • Q(f);N_GUARD,P_PINB(A)::R(H)+S(G),XS(g)
        • S(g);N_GUARD::R(H)+S(G)
      • Refutation
        • B(a);
  • Actual
    • S(E);XP(e)
    • Threat
      • B(A)
    • Vars
      • S(g);OGATE,P_SPINS(g),XS(E)::R1(H),XS(g)
      • Q(f);N_GUARD,P_PINB(A)::R1(C)
      • B(a);N_GUARD::R(H)+S(E),XS(g)
      • S(g);N_GUARD::R(H)+S(E)
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