MESON Chess Problem Database

Problem Display
PID: 196307 (8/1N1R4/2n5/pR3p2/4k3/3p2P1/rn1p2P1/B2b1NK1 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Suomen Shakki, 1984

8/1N1R4/2n5/pR3p2/4k3/3p2P1/rn1p2P1/B2b1NK1

#2

8 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Sa4
      • 2.Sd6#
    • 1...Sc4
      • 2.Sc5#
    • 1...Sd4
      • 2.Sd6#
    • 1...Se5
      • 2.Sc5#
  • Tries
    • 1.Bxb2?
      • threat
        • 2.Sc5#
        • 2.Sd6#
      • 1...Sd4
        • 2.Sd6#
        • 2.Rxd4#
      • 1...f4
        • 2.Sd6#
      • 1...Rxb2!
    • 1.Re5+?
      • 1...Sxe5
        • 2.Sc5#
      • 1...Kxe5!
    • 1.Rd4+?
      • 1...Sxd4
        • 2.Sd6#
      • 1...Kxd4!
  • Keys
    • 1.Kf2!
      • threat
        • 2.Sxd2#
      • 1...Sa4
        • 2.Sd6#
      • 1...Sc4
        • 2.Sc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • S(c);::S(G)
    • S(i);SBLOCK::S(G)
  • Tries
    • Try
      • B(A);XS(c)
      • Threat
        • DUALS(2)
      • Vars
        • P(h);::S(G)
      • Refutation
        • R(b);XB(A)
    • Try
      • R(F);CHECK
      • Vars
        • S(i);SBLOCK,XR(F)::S(G)
      • Refutation
        • K(f);P-FLIGHT,P_SPINS(c),XR(F)
    • Try
      • R(H);CHECK
      • Vars
        • S(i);SBLOCK,XR(H)::S(G)
      • Refutation
        • K(f);P-FLIGHT,P_SPINS(c),XR(H)
  • Actual
    • K(C);S_FLIGHT
    • Threat
      • S(B),XP(d)
    • Vars
      • S(c);::S(G)
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